Add ray dashboard log link

[EngHabu]

TL;DR

• Support configuring Ray Dashboard Links in the Ray Plugin.
• Add a configuration setting to enable/disable usage metrics collection
• Fix phase mapping to correctly map RayJob Pending to Initializing (instead of NotReady)

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Tracking Issue

flyteorg/flyte#4063

[codecov]

Codecov Report

Patch coverage: 65.11% and project coverage change: +1.45% 🎉

Comparison is base (08dd79b) 62.73% compared to head (67a4075) 64.19%.
Report is 1 commits behind head on master.

❗ Current head 67a4075 differs from pull request most recent head b591243. Consider uploading reports for the commit b591243 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #405      +/-   ##
==========================================
+ Coverage   62.73%   64.19%   +1.45%     
==========================================
  Files         156      156              
  Lines       13172    10704    -2468     
==========================================
- Hits         8263     6871    -1392     
+ Misses       4284     3202    -1082     
- Partials      625      631       +6     

Flag	Coverage Δ
unittests	?

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Files Changed	Coverage Δ
go/tasks/pluginmachinery/core/phase.go	21.50% <ø> (-1.27%)	⬇️
go/tasks/plugins/k8s/ray/config.go	36.36% <0.00%> (-13.64%)	⬇️
go/tasks/plugins/webapi/agent/config.go	100.00% <ø> (ø)
go/tasks/plugins/webapi/agent/plugin.go	68.71% <60.00%> (+2.81%)	⬆️
go/tasks/plugins/k8s/ray/ray.go	84.17% <80.00%> (+5.83%)	⬆️
go/tasks/plugins/k8s/ray/config_flags.go	38.70% <100.00%> (+2.34%)	⬆️

... and 132 files with indirect coverage changes

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