[YUNIKORN-1326] Develop tracker module.

[manirajv06]

What is this PR for?

Initial implementation of the tracker module.

What type of PR is it?

• [ ] - Feature

Todos

• [ ] - Task

What is the Jira issue?

https://issues.apache.org/jira/browse/YUNIKORN-1326

How should this be tested?

Screenshots (if appropriate)

Questions:

• [ ] - The licenses files need update.
• [ ] - There is breaking changes for older versions.
• [ ] - It needs documentation.

[codecov[bot]]

Codecov Report

Merging #439 (154365c) into master (1bfc579) will increase coverage by 0.17%. The diff coverage is 72.48%.

@@            Coverage Diff             @@
##           master     #439      +/-   ##
==========================================
+ Coverage   72.44%   72.62%   +0.17%     
==========================================
  Files          65       69       +4     
  Lines        9568     9946     +378     
==========================================
+ Hits         6932     7223     +291     
- Misses       2397     2473      +76     
- Partials      239      250      +11     

Impacted Files	Coverage Δ
pkg/scheduler/ugm/manager.go	55.05% <55.05%> (ø)
pkg/scheduler/ugm/queue_tracker.go	84.84% <84.84%> (ø)
pkg/scheduler/ugm/group_tracker.go	100.00% <100.00%> (ø)
pkg/scheduler/ugm/user_tracker.go	100.00% <100.00%> (ø)
pkg/common/utils.go	93.60% <0.00%> (+13.59%)	:arrow_up:

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[manirajv06]

@wilfred-s and myself reviewed the changes together in a call. Made changes based on the comments.