[llvm-profdata] Add more unit tests to check --output-size-limit feature when...

[llvm-profdata] Add more unit tests to check --output-size-limit feature when compression is enabled

Add unit tests for ExtBinary format with compression. This patch doesn't imply there's a bug in the existing implementation,
but as a precaution that planned changes to SampleProfileReader may cause it to break.

Reviewed By: snehasish

Differential Revision: https://reviews.llvm.org/D144524