Improvement: accept int value for Resources

[lowc1012]

Tracking issue

Closes flyteorg/flyte #4691

Why are the changes needed?

Make str and int available for mem, gpu and ephemeral_storage. Make str, int, float available for cpu.

What changes were proposed in this pull request?

Update Resources class in flytekit/core/resources.py

How was this patch tested?

Setup process

Screenshots

Check all the applicable boxes

• [ ] I updated the documentation accordingly.
• [ ] All new and existing tests passed.
• [x] All commits are signed-off.

Related PRs

Docs link

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 80.59%. Comparing base (bf38b8e) to head (9976397). Report is 4 commits behind head on master.

:exclamation: Current head 9976397 differs from pull request most recent head 1c6be50. Consider uploading reports for the commit 1c6be50 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2196      +/-   ##
==========================================
- Coverage   83.04%   80.59%   -2.45%     
==========================================
  Files         324      180     -144     
  Lines       24861    17856    -7005     
  Branches     3547     3483      -64     
==========================================
- Hits        20645    14391    -6254     
+ Misses       3591     2843     -748     
+ Partials      625      622       -3     

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[eapolinario]

Can you merge master ?

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