feat: add jwt authn to SecurityPolicy

[zhaohuabing]

What type of PR is this?
This PR adds JWT Authentication to the SecurityPolicy.

Related issue: #1845

This feature is intended to replace the JWT Authn configuration in the existing AuthenticationFilter. AuthenticationFilter will be removed in a follow-up PR.

[codecov]

Codecov Report

Merging #2079 (be3d207) into main (6b8794e) will increase coverage by 0.14%.
The diff coverage is 72.86%.

@@            Coverage Diff             @@
##             main    #2079      +/-   ##
==========================================
+ Coverage   64.32%   64.46%   +0.14%     
==========================================
  Files         107      109       +2     
  Lines       14944    15299     +355     
==========================================
+ Hits         9613     9863     +250     
- Misses       4739     4820      +81     
- Partials      592      616      +24     

Files	Coverage Δ
api/v1alpha1/validation/authenticationfilter.go	86.56% <ø> (ø)
internal/gatewayapi/securitypolicy.go	78.60% <100.00%> (+2.34%)	⬆️
internal/xds/translator/authentication.go	71.81% <75.00%> (-1.66%)	⬇️
internal/xds/translator/translator.go	79.51% <0.00%> (-0.84%)	⬇️
api/v1alpha1/validation/securitypolicy_validate.go	94.36% <94.36%> (ø)
internal/ir/xds.go	71.39% <45.45%> (-2.72%)	⬇️
internal/xds/translator/httpfilters.go	72.36% <25.00%> (-5.90%)	⬇️
internal/ir/zz_generated.deepcopy.go	11.72% <0.00%> (-0.25%)	⬇️
internal/xds/translator/jwt_authn.go	73.36% <73.36%> (ø)

... and 2 files with indirect coverage changes

[arkodg]

LGTM thanks !