ENG-466: code challenge methods supported field is added to openid configuration (#1307)

* fix: added supported challenge methods to openid-configuration as specified in RFC 8414

* chore: linting fixes after is int

* revert: FusionAuthMain.java and fusionauth-plugin-api.iml

* chore: revert FusionAuthMain.java eof

Author: ucatbas

openapi.yaml

@@ -5439,6 +5439,10 @@ components:
           type: array
           items:
             type: string
+        code_challenge_methods_supported:
+          type: array
+          items:
+            type: string
     OpenIdConnectApplicationConfiguration:
       description: ''
       type: object