fix: improvements for login and oidc (#227)

* add csrf

* caching

* caching

* caching

* caching

* security headers

* csp and security headers

* error handler csp

* select user with display name

* csp

* user selection styling

* username to loginname

* regenerate grpc

* regenerate

* change to login name

migrations/cockroach/V1.19__usersession_names.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+ALTER TABLE auth.user_sessions ADD COLUMN user_display_name TEXT;
+ALTER TABLE auth.user_sessions ADD COLUMN login_name TEXT;
+
+COMMIT;