Implement GetProject endpoint in FlyteAdmin

[RRap0so]

Tracking issue

Closes: #4317

Describe your changes

Add new GetProject enpoint to Flyteadmin

Check all the applicable boxes

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

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[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (398e5cb) 59.03% compared to head (884df72) 59.90%.

❗ Current head 884df72 differs from pull request most recent head 5a44287. Consider uploading reports for the commit 5a44287 to get more accurate results

Files	Patch %	Lines
flyteadmin/pkg/rpc/adminservice/project.go	0.00%	13 Missing ⚠️
flyteadmin/pkg/manager/impl/project_manager.go	71.42%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4316      +/-   ##
==========================================
+ Coverage   59.03%   59.90%   +0.86%     
==========================================
  Files         622      562      -60     
  Lines       52682    40252   -12430     
==========================================
- Hits        31102    24112    -6990     
+ Misses      19098    13795    -5303     
+ Partials     2482     2345     -137     

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[RRap0so]

Replaced by #4825