Feat/Custom Policy Assignment -- Feature Complete

[GilTeraSky]

1. What this PR does / why we need it:
   This PR includes the complete implementation of a Custom Policy Assignment.

2. Which issue(s) this PR fixes

3. Additional information
   a. It was needed to modify the InputData struct to support custom policy with custom template.
   b. Parameters field is a string because it is a dynamic field, therefore it will be populate with JSON encoded string for the
   parameters.
   c. On plan phase, parameters will be validated according to the OpenAPIV3 Schema that is defined for the custom template.

4. Special notes for your reviewer

[shobha2626]

Please squash the commits into meaningful commit message

[codecov-commenter]

Codecov Report

Attention: 106 lines in your changes are missing coverage. Please review.

Comparison is base (d0d6414) 25.25% compared to head (013cd5d) 25.29%.

Files	Patch %	Lines
...ces/policy/kind/custom/recipe/tmc_custom_schema.go	41.05%	56 Missing ⚠️
...ernal/resources/policy/kind/custom/input_schema.go	0.00%	31 Missing ⚠️
...ternal/resources/policy/kind/custom/spec_schema.go	0.00%	19 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #347      +/-   ##
==========================================
+ Coverage   25.25%   25.29%   +0.04%     
==========================================
  Files         191      192       +1     
  Lines       16532    16657     +125     
==========================================
+ Hits         4175     4214      +39     
- Misses      12139    12225      +86     
  Partials      218      218              

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[ramya-bangera]

@shobha2626 - I could not find the acceptance tests , is it part of separate PR?

[shobha2626]

@shobha2626 - I could not find the acceptance tests , is it part of separate PR?

@ramya-bangera acceptance test was not done as part of this PR. Will be opening a new PR with acceptance test changes

[shobha2626]

Added acceptance test as part of the PR - #371

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.