add deepmd/hdf5 format

[njzjz]

To support deepmodeling/deepmd-kit#1163.

[codecov-commenter]

Codecov Report

Merging #203 (eb14fd3) into devel (3c595ca) will increase coverage by 0.17%.
The diff coverage is 84.00%.

@@            Coverage Diff             @@
##            devel     #203      +/-   ##
==========================================
+ Coverage   81.54%   81.71%   +0.17%     
==========================================
  Files          54       56       +2     
  Lines        4639     4819     +180     
==========================================
+ Hits         3783     3938     +155     
- Misses        856      881      +25     

Impacted Files	Coverage Δ
dpdata/deepmd/hdf5.py	82.66% <82.66%> (ø)
dpdata/plugins/deepmd.py	93.87% <88.00%> (-6.13%)	⬇️
dpdata/qe/traj.py	85.21% <0.00%> (-0.11%)	⬇️
dpdata/pwmat/atomconfig.py	97.59% <0.00%> (-0.03%)	⬇️
dpdata/gromacs/gro.py	98.76% <0.00%> (-0.02%)	⬇️
dpdata/gaussian/log.py	100.00% <0.00%> (ø)
dpdata/pwmat/movement.py	77.77% <0.00%> (ø)
dpdata/unit.py	88.15% <0.00%> (ø)
dpdata/cp2k/output.py	97.70% <0.00%> (+<0.01%)	⬆️
dpdata/amber/sqm.py	98.82% <0.00%> (+0.04%)	⬆️
... and 2 more

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