Add support for dynamic template data computation in template rendering action

[lburgazzoli]

Description

When creating a template rendering action, is is now possible to compute dynamic data based on the current ReconciliationRequest:

action := template.NewAction(
  template.WithData(map[string]any{
	  "ID": id,
	  "SMM": map[string]any{
		  "Name": name,
	  },
	  "Foo": "bar",
  }),
  template.WithDataFn(func(_ context.Context, rr *types.ReconciliationRequest) (map[string]any, error) {
	  return map[string]any{
		  "Foo": "bar",
		  "UID": rr.Instance.GetUID(),
	  }, nil
  }),
)

How Has This Been Tested?

Screenshot or short clip

Merge criteria

• You have read the contributors guide.
• Commit messages are meaningful - have a clear and concise summary and detailed explanation of what was changed and why.
• Pull Request contains a description of the solution, a link to the JIRA issue, and to any dependent or related Pull Request.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.80%. Comparing base (3e897ce) to head (beea74d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1527      +/-   ##
==========================================
+ Coverage   19.69%   19.80%   +0.10%     
==========================================
  Files         161      161              
  Lines       11102    11113      +11     
==========================================
+ Hits         2187     2201      +14     
+ Misses       8683     8681       -2     
+ Partials      232      231       -1     

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