refactor: load gauge threshold model

[anandtiwary]

Description

Please include a summary of the change, motivation and context.
Loading Gauge threshold model

Testing

Please describe the tests that you ran to verify your changes. Please summarize what did you test and what needs to be tested e.g. deployed and tested helm chart locally.

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

Documentation

Make sure that you have documented corresponding changes in this repository or hypertrace docs repo if required.

[codecov]

Codecov Report

Merging #350 (f048b81) into main (c0fba1c) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #350      +/-   ##
==========================================
+ Coverage   86.22%   86.27%   +0.04%     
==========================================
  Files         729      729              
  Lines       14843    14844       +1     
  Branches     1760     1847      +87     
==========================================
+ Hits        12799    12806       +7     
+ Misses       2013     2005       -8     
- Partials       31       33       +2     

Impacted Files	Coverage Δ
...red/dashboard/widgets/gauge/gauge-widget.module.ts	100.00% <100.00%> (ø)
...pover/position-strategy/mouse-position-strategy.ts	9.67% <0.00%> (ø)
.../widgets/gauge/thresholds/gauge-threshold.model.ts	100.00% <0.00%> (+100.00%)	⬆️

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