feat: add auto group create from OIDC (#8884)

* add flag for auto create groups
* fixup! add flag for auto create groups
* sync missing groups
Also added a regex filter to filter out groups that are not
important

coderd/database/queries/groups.sql

@@ -42,6 +42,28 @@ INSERT INTO groups (
 VALUES
 	($1, $2, $3, $4, $5, $6) RETURNING *;
 
+-- name: InsertMissingGroups :many
+-- Inserts any group by name that does not exist. All new groups are given
+-- a random uuid, are inserted into the same organization. They have the default
+-- values for avatar, display name, and quota allowance (all zero values).
+INSERT INTO groups (
+	id,
+	name,
+	organization_id,
+    source
+)
+SELECT
+    gen_random_uuid(),
+    group_name,
+    @organization_id,
+    @source
+FROM
+    UNNEST(@group_names :: text[]) AS group_name
+-- If the name conflicts, do nothing.
+ON CONFLICT DO NOTHING
+RETURNING *;
+
+
 -- We use the organization_id as the id
 -- for simplicity since all users is
 -- every member of the org.