infinity

Hi,

If I take the "Very Simple Case" from the [tutorial](https://www.boost.org/doc/libs/1_92_0/libs/serialization/doc/index.html), I get a text file with `22 serialization::archive 20 0 0 35 59 2.456699944e+01`

Then:
```diff
--- a/main.cpp
+++ b/main.cpp
@@ -39,7 +39,7 @@ int main() {
std::ofstream ofs("filename");

// create class instance
- const gps_position g(35, 59, 24.567f);
+ const gps_position g(35, 59, std::numeric_limits::infinity());

// save data to archive
{
```

lead to `22 serialization::archive 20 0 0 35 59 inf` for the serialization, but deserialization fail with:

```
terminate called after throwing an instance of 'boost::archive::archive_exception'
what(): input stream error
Abandon (core dumped) ./build/inf
```

Is there a way to handle this kind of value ?

Start with the tutorial's Very Simple Case in main.cpp and reproduce the text archive containing inf using the float infinity value. Trace the text archive deserialization path and compare it with the existing finite-float case; done means the serialized infinity value can be read back without an archive_exception.

Written by the indexing model from the issue text.