Consider adopting the Ryu algorithm

The Ryu algorithm (https://github.com/ulfjack/ryu) for IEEE-754 serialization offer a number of interesting features such a simple, fast and (with a minor tweak) 100% compatible with ES6. Using the Ryu algorithm also makes https://tools.ietf.org/html/draft-rundgren-json-canonicalization-scheme-06 more realistic for JSONB, particularly with the proposed upgrade in https://github.com/eclipse-ee4j/jsonp/issues/160. Here is a comparison made between String.valueOf(double) and my Ryu adaption for Java where each value has been serialized 1M times.

```code
IEEE-754 JDK Ryu JDK Serialization Ryu Serialization
Selected values:
0000000000000000 62 34 0.0 0
8000000000000000 31 16 -0.0 0
0000000000000001 511 80 4.9E-324 5e-324
8000000000000001 522 64 -4.9E-324 -5e-324
7fefffffffffffff 1764 142 1.7976931348623157E308 1.7976931348623157e+308
ffefffffffffffff 1745 110 -1.7976931348623157E308 -1.7976931348623157e+308
4340000000000000 96 157 9.007199254740992E15 9007199254740992
c340000000000000 80 79 -9.007199254740992E15 -9007199254740992
4430000000000000 397 158 2.9514790517935283E20 295147905179352830000
44b52d02c7e14af5 349 176 9.999999999999997E22 9.999999999999997e+22
44b52d02c7e14af6 349 207 9.999999999999999E22 1e+23
44b52d02c7e14af7 350 96 1.0000000000000001E23 1.0000000000000001e+23
444b1ae4d6e2ef4e 302 159 9.999999999999997E20 999999999999999700000
444b1ae4d6e2ef4f 304 95 9.999999999999999E20 999999999999999900000
444b1ae4d6e2ef50 126 287 1.0E21 1e+21
3eb0c6f7a0b5ed8c 1236 175 9.999999999999997E-7 9.999999999999997e-7
3eb0c6f7a0b5ed8d 333 206 1.0E-6 0.000001
41b3de4355555553 349 191 3.333333333333332E8 333333333.3333332
41b3de4355555554 326 111 3.3333333333333325E8 333333333.33333325
41b3de4355555555 304 111 3.333333333333333E8 333333333.3333333
41b3de4355555556 300 111 3.333333333333334E8 333333333.3333334
41b3de4355555557 318 113 3.3333333333333343E8 333333333.33333343
becbf647612f3696 980 128 -3.3333333333333333E-6 -0.0000033333333333333333
IEEE-754 JDK Ryu JDK Serialization Ryu Serialization
Random values:
34ff465fb5a29fd8 1077 95 2.0407823107657903E-53 2.0407823107657903e-53
0180aa7cc33fd23b 1846 112 1.9442174934288537E-301 1.9442174934288537e-301
2ceb54308f24234d 1140 95 2.620311665382176E-92 2.620311665382176e-92
b287eee46fdff09f 1035 115 -2.840738340340803E-65 -2.840738340340803e-65
2229562c860af2e6 1318 110 4.0580809869721453E-144 4.0580809869721453e-144
f80f61239d20259a 1710 96 -2.0721989565386525E270 -2.0721989565386525e+270
add9ab29d8081dba 1095 95 -8.06461389117999E-88 -8.06461389117999e-88
d14fba0dc766156e 1178 97 -4.8152042555373337E83 -4.8152042555373337e+83
6ab1e7ab55b21b95 1237 111 8.98194436781924E205 8.98194436781924e+205
5e25856f84be4190 1111 95 3.35919387840897E145 3.35919387840897e+145
66eeda83d5ec1ec3 1243 96 6.712322230840099E187 6.712322230840099e+187
1d037151a2eee09d 1284 97 6.439734202044909E-169 6.439734202044909e-169
8d4fb7c3d3902f2e 1681 95 -1.4516336465501977E-244 -1.4516336465501977e-244
2f23cd7caecbc18f 1207 95 1.3047738249326575E-81 1.3047738249326575e-81
2dde8dcdf93762ab 1144 95 9.599492442524916E-88 9.599492442524916e-88
84d3ff3c4b08ae2b 1735 96 -2.1012090586052427E-285 -2.1012090586052427e-285
54e868c970dcc690 1171 95 1.0677862209985186E101 1.0677862209985186e+101
d01ced65deab00bd 968 95 -8.37389158027637E77 -8.37389158027637e+77
37c9c83893ccce89 1000 95 5.919282917670671E-40 5.919282917670671e-40
8eb7a89ab8126107 1381 95 -9.08307027853398E-238 -9.08307027853398e-238
c25a4aee0c1c5cab 332 111 -4.5170505739344794E11 -451705057393.44794
056dd3cb849bdc76 1747 111 1.6046797594959664E-282 1.6046797594959664e-282
770cb51be8ffb6c9 1686 95 2.8926835254693333E265 2.8926835254693333e+265
0af991011d61cd97 1540 111 8.513608375142944E-256 8.513608375142944e-256
fd86b4cb740afd06 1651 96 -4.6405640207979055E296 -4.6405640207979055e+296
6770f6560ace46c8 1284 111 1.889386235130226E190 1.889386235130226e+190
29c6087173eaf5ab 1144 96 1.876310978051856E-107 1.876310978051856e-107
03854f4599dcf432 1765 96 1.0677034467937273E-291 1.0677034467937273e-291
1f1eebdbc2be423a 1302 111 8.797521803925928E-159 8.797521803925928e-159
589eae2afa44a8f6 1125 95 7.736749288152502E118 7.736749288152502e+118
c0b9ef54d02451c3 350 111 -6639.331300992929 -6639.331300992929
7c6092051b900ba6 1715 96 1.2918692647856208E291 1.2918692647856208e+291
92f59d018298a475 1535 95 -2.4490875310340735E-217 -2.4490875310340735e-217
b7aca47913b015f6 1001 111 -1.643997295019911E-40 -1.643997295019911e-40
d872908c76063477 1191 111 -1.1703747023547008E118 -1.1703747023547008e+118
1704d41ceb0a5bb3 1424 111 8.707474946109467E-198 8.707474946109467e-198
48d6e50167e817f8 950 95 7.977587285062442E42 7.977587285062442e+42
887e4ef213b04cf3 1538 95 -9.179237569720412E-268 -9.179237569720412e-268
98c01cf9a909b084 1379 111 -1.808231857146977E-189 -1.808231857146977e-189
6e8b2131628be78d 1537 95 3.1381314757793522E224 3.1381314757793522e+224
e828e9002b49fb99 1505 95 -5.6825560219219796E193 -5.6825560219219796e+193
96f87c499d218bcb 1351 96 -5.11813583331773E-198 -5.11813583331773e-198
70fa702a8bead87a 1566 111 1.6812320757231358E236 1.6812320757231358e+236
0edbea290c4de85e 1617 95 4.2868295597931197E-237 4.2868295597931197e-237
c0d6ff0aba2e5742 302 110 -23548.167613587582 -23548.167613587582
a709f0b9af623191 1283 111 -1.2557040640113272E-120 -1.2557040640113272e-120
d1a640cc4b91653b 1141 95 -2.1615219364130858E85 -2.1615219364130858e+85
3d54e9aec27017c1 937 95 2.9718908747180134E-13 2.9718908747180134e-13
4249669384146a70 319 111 2.1819025207283154E11 218190252072.83154
1d7b128021ba310c 1413 111 1.1477493239359762E-166 1.1477493239359762e-166
JDK Total=74325 Ryu Total=8075
```

Start by reviewing the linked Ryu project, the Java adaptation described in the issue, and the JSON Canonicalization Scheme and JSON-P issue links. A complete outcome would be a decided adoption plan or a documented decision not to adopt Ryu, including the compatibility and performance considerations raised here.

Written by the indexing model from the issue text.