Feature/add metrics

[caiyinqiong]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 91.22807% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.28%. Comparing base (23cdd18) to head (72db9a9).
⚠️ Report is 2 commits behind head on dev.

Files with missing lines	Patch %	Lines
matchzoo/metrics/mean_reciprocal_rank.py	66.66%	2 Missing ⚠️
matchzoo/metrics/recall.py	90.90%	2 Missing ⚠️
matchzoo/metrics/f1.py	95.45%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #132      +/-   ##
==========================================
- Coverage   93.30%   93.28%   -0.02%     
==========================================
  Files         113      115       +2     
  Lines        4224     4275      +51     
==========================================
+ Hits         3941     3988      +47     
- Misses        283      287       +4     

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