Add force-read-only to the aconfig tool which when set to true will override...

Add force-read-only to the aconfig tool which when set to true will override all permissions to READ-ONLY

Change-Id: I77f16a885ecdf0db34e5bd93bc4a50cd7780e99a
Bug: b/421048609
Test: generated all-flags-declarations with and without the flag and validated diff