Complete the low-level wrapper of all used HDF5 functions.

[1uc]

This wrapper enables us to see more easily notice that an error code is being ignored, makes it very clear how we wrap HDF5 function and encourages us to not ignore unchecked error codes if we see one. It'll make it easier to have uniform error handling. Additionally, it prepares the way towards more interesting features, such as thread-safety or logging each call to HDF5 (for creating pure HDF5 reproducers).

The rules are:

1. Each HDF5 "function" H5?* is wrapped by detail::h5?_*. We can't reuse the name in a namespace because some of them are macros.
2. Unless the wrapped function is in the namespace detail::nothrow it'll throw whenever the returned value indicates an error.
3. The arguments to H5?* and detail::h5?_* are identical.
4. Outside of the files h5?_wrapper.hpp we don't use any HDF5 functions or function macros.

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (2af7cb5) 85.27% compared to head (b3d812b) 85.34%.

Files	Patch %	Lines
include/highfive/bits/h5i_wrapper.hpp	82.75%	5 Missing ⚠️
include/highfive/bits/H5Object_misc.hpp	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #863      +/-   ##
==========================================
+ Coverage   85.27%   85.34%   +0.06%     
==========================================
  Files          83       84       +1     
  Lines        5482     5508      +26     
==========================================
+ Hits         4675     4701      +26     
  Misses        807      807              

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