feat: add display_name field to groups (#8740)

* feat: add display_name field to groups

This is a non-unique human friendly group name for display
purposes. This means a display name can be used instead of
using an environment var to remap groups with OIDC names to
Coder names. Now groups can retain the OIDC name for mapping,
and use a display name for display purposes.

coderd/database/queries/groups.sql

@@ -34,12 +34,13 @@ AND
 INSERT INTO groups (
 	id,
 	name,
+	display_name,
 	organization_id,
 	avatar_url,
 	quota_allowance
 )
 VALUES
-	($1, $2, $3, $4, $5) RETURNING *;
+	($1, $2, $3, $4, $5, $6) RETURNING *;
 
 -- We use the organization_id as the id
 -- for simplicity since all users is
@@ -57,11 +58,12 @@ VALUES
 UPDATE
 	groups
 SET
-	name = $1,
-	avatar_url = $2,
-	quota_allowance = $3
+	name = @name,
+	display_name = @display_name,
+	avatar_url = @avatar_url,
+	quota_allowance = @quota_allowance
 WHERE
-	id = $4
+	id = @id
 RETURNING *;
 
 -- name: DeleteGroupByID :exec