feat: read admin group from OIDC token claim (#445)

internal/config/config.go

@@ -70,10 +70,12 @@ type config struct {
 	GiteaUrl       string `yaml:"gitea.url" env:"OG_GITEA_URL"`
 	GiteaName      string `yaml:"gitea.name" env:"OG_GITEA_NAME"`
 
-	OIDCProviderName string `yaml:"oidc.provider-name" env:"OG_OIDC_PROVIDER_NAME"`
-	OIDCClientKey    string `yaml:"oidc.client-key" env:"OG_OIDC_CLIENT_KEY"`
-	OIDCSecret       string `yaml:"oidc.secret" env:"OG_OIDC_SECRET"`
-	OIDCDiscoveryUrl string `yaml:"oidc.discovery-url" env:"OG_OIDC_DISCOVERY_URL"`
+	OIDCProviderName   string `yaml:"oidc.provider-name" env:"OG_OIDC_PROVIDER_NAME"`
+	OIDCClientKey      string `yaml:"oidc.client-key" env:"OG_OIDC_CLIENT_KEY"`
+	OIDCSecret         string `yaml:"oidc.secret" env:"OG_OIDC_SECRET"`
+	OIDCDiscoveryUrl   string `yaml:"oidc.discovery-url" env:"OG_OIDC_DISCOVERY_URL"`
+	OIDCGroupClaimName string `yaml:"oidc.group-claim-name" env:"OG_OIDC_GROUP_CLAIM_NAME"`
+	OIDCAdminGroup     string `yaml:"oidc.admin-group" env:"OG_OIDC_ADMIN_GROUP"`
 
 	MetricsEnabled bool `yaml:"metrics.enabled" env:"OG_METRICS_ENABLED"`