Implement better support for debug and release running of snapshot tests that succesfully compile

[ironcev]

Snapshot test that successfully compile will have a different final line, e.g., either:

Finished debug [unoptimized + fuel] target(s) [32 B] in ???

or

Finished release [optimized + fuel] target(s) [32 B] in ???

depending if we compile the test project in debug or release build.

We need support for snapshot tests to be able to compare snapshots no matter if the test is executed in the debug or release mode.

The current workaround is to force such snapshot tests to always compile in release mode by adding cmds to the snapshot.toml:

cmds = ["forc build --path {root} --release"]