feat: multiple oauth providers (#355)

* feat: add flag decoder (candidate)

* refactor: finalize flags decoder

* feat: add env decoder

* feat: add oauth config parsing logic

* feat: implement backend logic for multiple oauth providers

* feat: implement multiple oauth providers in the frontend

* feat: add some default icons

* chore: add credits for parser

* feat: style oauth auto redirect screen

* fix: bot suggestions

* refactor: rework decoders using simpler and more efficient pattern

* refactor: rework oauth name database migration

internal/service/google_oauth_service.go

@@ -28,6 +28,7 @@ type GoogleOAuthService struct {
 	context  context.Context
 	token    *oauth2.Token
 	verifier string
+	name     string
 }
 
 func NewGoogleOAuthService(config config.OAuthServiceConfig) *GoogleOAuthService {
@@ -39,6 +40,7 @@ func NewGoogleOAuthService(config config.OAuthServiceConfig) *GoogleOAuthService
 			Scopes:       GoogleOAuthScopes,
 			Endpoint:     endpoints.Google,
 		},
+		name: config.Name,
 	}
 }
 
@@ -111,3 +113,7 @@ func (google *GoogleOAuthService) Userinfo() (config.Claims, error) {
 
 	return user, nil
 }
+
+func (google *GoogleOAuthService) GetName() string {
+	return google.name
+}