feat: Add boundary_auth_method data source (#505)

examples/data-sources/boundary_auth_method/data-source.tf

@@ -0,0 +1,15 @@
+# Retrieve an auth method from the global scope
+data "boundary_auth_method" "auth_method" {
+  name = "password_auth_method"
+}
+
+# Auth method from a org scope
+data "boundary_scope" "org" {
+  name     = "my-org"
+  scope_id = "global"
+}
+
+data "boundary_auth_method" "auth_method" {
+  name     = "password_auth_method"
+  scope_id = data.boundary_scope.org.id
+}