Add `/options/license` and `/options/gitignore` to `.ignore` (#30219)

Ignore this folder in tools like `rg` or `ag`. Also sorted the entries
alphabetically.

(cherry picked from commit 934fa46f769f0b90fc319054612d4f5c9a4c46ba)

.ignore

···
 /modules/options/bindata.go
 /modules/public/bindata.go
 /modules/templates/bindata.go
-/vendor
+/options/gitignore
+/options/license
 /public/assets
+/vendor
 node_modules