feat: enable local validations for egctl translate and file provider

[shawnh2]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1295, ref #2028

[codecov]

Codecov Report

Attention: Patch coverage is 51.81818% with 53 lines in your changes missing coverage. Please review.

Project coverage is 66.01%. Comparing base (3b9ab70) to head (414df60).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/gatewayapi/resource/load.go	14.89%	38 Missing and 2 partials ⚠️
internal/cmd/egctl/validate.go	76.47%	4 Missing and 4 partials ⚠️
internal/gatewayapi/resource/validator.go	60.00%	2 Missing ⚠️
internal/cmd/egctl/experimental.go	0.00%	1 Missing ⚠️
internal/gatewayapi/resource/fs.go	95.23%	1 Missing ⚠️
internal/provider/file/resources.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4257      +/-   ##
==========================================
+ Coverage   65.98%   66.01%   +0.02%     
==========================================
  Files         197      200       +3     
  Lines       23972    24052      +80     
==========================================
+ Hits        15818    15878      +60     
- Misses       7027     7041      +14     
- Partials     1127     1133       +6     

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[arkodg]

LGTM thanks !
this is a really neat feature

[Xunzhuo]

Nice!