Add more optional tools

### Comment:

`diffoscope` offers a ridiculous list of possible integrations. as of #147:

```
+ diffoscope --list-missing-tools
Available-in-Arch Linux-packages: cdrtools, colord, dtc, enjarify, fpc, gnumeric, libcaca, libxmlb, odt2txt, pgpdump, python-jsbeautifier, radare2, tcpdump, uboot-tools
Available-in-Debian-packages: aapt, abootimg, apksigcopier, apksigner, apktool, caca-utils, colord, coreboot-utils, device-tree-compiler, dexdump, enjarify, fontforge-extras, fp-utils, genisoimage, gnumeric, jsbeautifier, libxmlb-utils, odt2txt, oggvideotools, pgpdump, procyon-decompiler, radare2, sng, tcpdump, u-boot-tools, xmlbeans, zip
Available-in-FreeBSD-packages: cdrtools, colord, fpc, libcaca
Available-in-GNU Guix-packages: abootimg, cdrkit-libre, colord, dtc, enjarify, fpc, gnumeric, libcaca, libxmlb, odt2txt, pgpdump, python-jsbeautifier, radare2, sng, tcpdump, u-boot-tools, zip
External-Tools-Required: aapt2, abootimg, apksigcopier, apksigner, apktool, cbfstool, cd-iccdump, dexdump, dumpimage, dumpxsb, enjarify, fdtdump, img2txt, isoinfo, js-beautify, odt2txt, oggDump, pgpdump, ppudump, procyon, radare2, showttf, sng, ssconvert, tcpdump, xb-tool, zipnote
Missing-Python-Modules: androguard, guestfs, r2pipe
```

Some notes:
- [ ] `zipnote`
- [ ] https://github.com/conda-forge/zip-feedstock/pull/4
- [ ] [`sng` is now available](https://github.com/conda-forge/sng-feedstock)
- [ ] seems to be broken in some subtle way, perhaps a version mismatch