Add placeholder enum for scope ID type
This change adds an enum for the different types of scopes that may be
covered by Grid. The current options include `global` and `service`.
This informs Griddle what to expect for the scope ID argument, and if
it's required.
//! These values may be sourced from command line arguments, environment variables or pre-defined
//! defaults. This module allows for configuration values from each of these sources to be combined
//! into a final `GriddleConfig` object.
+
+#[derive(Clone, Debug, PartialEq)]
+/// Placeholder for indicating the scope of the requests, will be used to determine if requests
+/// to Griddle should include a scope ID and what format ID to expect
+pub enum Scope {
+ Global,
+ Service,
+}
