refactor(service): improve the data validation and its error handling

[donch1989]

Because

• We didn't handle the data validation well. We need to validate pipeline input and component input/output data and return proper error messages

This commit

• Improve the data validation and its error handling

[linear]

INS-2534 improve error message for pipeline trigger endpoint

[codecov]

Codecov Report

Attention: 45 lines in your changes are missing coverage. Please review.

Comparison is base (f8dac09) 0.00% compared to head (593318c) 0.00%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff           @@
##            main    #291    +/-   ##
======================================
  Coverage   0.00%   0.00%            
======================================
  Files          7       7            
  Lines       2128    2024   -104     
======================================
+ Misses      2128    2024   -104     

Flag	Coverage Δ
unittests	0.00% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
pkg/service/state.go	0.00% <ø> (ø)
pkg/service/validator.go	0.00% <ø> (ø)
pkg/service/openapi.go	0.00% <0.00%> (ø)
pkg/service/service.go	0.00% <0.00%> (ø)

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.