feat: assign users to groups returned by OIDC provider (#5965)

coderd/database/queries/groupmembers.sql

@@ -0,0 +1,60 @@
+-- name: GetGroupMembers :many
+SELECT
+	users.*
+FROM
+	users
+JOIN
+	group_members
+ON
+	users.id = group_members.user_id
+WHERE
+	group_members.group_id = $1
+AND
+	users.status = 'active'
+AND
+	users.deleted = 'false';
+
+-- InsertUserGroupsByName adds a user to all provided groups, if they exist.
+-- name: InsertUserGroupsByName :exec
+WITH groups AS (
+    SELECT
+        id
+    FROM
+        groups
+    WHERE
+        groups.organization_id = @organization_id AND
+        groups.name = ANY(@group_names :: text [])
+)
+INSERT INTO
+    group_members (user_id, group_id)
+SELECT
+    @user_id,
+    groups.id
+FROM
+    groups;
+
+-- name: DeleteGroupMembersByOrgAndUser :exec
+DELETE FROM
+    group_members
+USING
+    group_members AS gm
+LEFT JOIN
+    groups
+ON
+    groups.id = gm.group_id
+WHERE
+    groups.organization_id = @organization_id AND
+    gm.user_id = @user_id;
+
+-- name: InsertGroupMember :exec
+INSERT INTO
+    group_members (user_id, group_id)
+VALUES
+    ($1, $2);
+
+-- name: DeleteGroupMemberFromGroup :exec
+DELETE FROM
+	group_members
+WHERE
+	user_id = $1 AND
+	group_id = $2;