feat(overrides): add override functionality to Options

Signed-off-by: miguel456 <me@nogueira.codes>

.env.example

@@ -13,6 +13,19 @@ APP_AUTH_BANNER=""
 APP_SITEHOMEPAGE=""
 API_PREFIX="api"
 
+
+# FEATURE OVERRIDES
+# Feature overrides allow you to force-enable/disable features regardless of application settings and feature flags
+# Turning on the override will disable its feature
+
+# Possible values:
+# KILLSWITCH: Disables the feature altogether
+# FORCE_ENABLE: Enables the feature
+# CONTROL: Lets the application settings and feature flags take effect (default)
+
+# Require valid game license to sign up
+OVERRIDE_LICENSED_ACCOUNT=CONTROL
+
 # Add legal document links here. You may also leave them empty.
 GUIDELINES_URL="#"
 PRIVACY_URL="#"