enhance(pipeline): add ruledata flags for vela validate pipeline

[ecrupper]

This will allow users to run the validate command with an eye to visualizing how their pipelines compile based on certain contexts.

Follow up from go-vela/server#1076

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 81.65%. Comparing base (63d5835) to head (09e4396).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #547      +/-   ##
==========================================
+ Coverage   81.53%   81.65%   +0.12%     
==========================================
  Files         147      147              
  Lines        3568     3603      +35     
==========================================
+ Hits         2909     2942      +33     
- Misses        484      485       +1     
- Partials      175      176       +1     

Files	Coverage Δ
command/pipeline/exec.go	0.00% <ø> (ø)
command/pipeline/validate.go	71.42% <100.00%> (+5.71%)	⬆️
action/pipeline/validate.go	87.82% <87.87%> (+1.61%)	⬆️