[llvm] [ICP] Add a few tunings to indirect-call-promotion (PR #149892)

[via llvm-commits]

xur-llvm wrote:

Updated based on David and Teresa reviews. 
(1) Changed option names
(2) Fixed the VP metadata update issue.
(3) Added a test case to check the metadata update.

https://github.com/llvm/llvm-project/pull/149892