eof: Test that EOF sets the experimental flag in metadata

[rodiazet]

Add test which checks that setting an EOF version results in the experimental flag being set.

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[cameel]

We should make the test use settings from command-line like other metadata tests already do. Other than that the test seems ok.

[cameel]

To get more coverage, we should use values from the command-line rather than hard-coded ones:

Suggested change

	compilerStack.setEVMVersion(langutil::EVMVersion::prague());
	compilerStack.setViaIR(true);
	compilerStack.setEOFVersion(1);
	compilerStack.setOptimiserSettings(true);
	compilerStack.setEVMVersion(CommonOptions::get().evmVersion());
	compilerStack.setViaIR(true);
	compilerStack.setEOFVersion(CommonOptions::get().eofVersion());
	compilerStack.setOptimiserSettings(CommonOptions::get().optimize);

Then for non-EOF just expect experimental to be not set.

Note that this is the way most other tests here already work here.