fix: move test to correct location

[SGSSGene]

@sxrzh mentions in PR #1427 the wrong location of the tests.
This PR moves the tests and applies adjustments to fit the structure of the tests in those directories.

[sxrzh]

Thank you! The tests are now in the right location.
I think SetVerbatimTag in emitter_test.cpp should be EmitSetVerbatimTag for consistency (That was my fault in #1427).
By the way, it seems that a trailing \n in emitter_test.cpp was accidentally removed. I don't know whether this matters.

[sxrzh]

@SGSSGene

[SGSSGene]

Thank you! The tests are now in the right location. I think SetVerbatimTag in emitter_test.cpp should be EmitSetVerbatimTag for consistency (That was my fault in #1427). By the way, it seems that a trailing \n in emitter_test.cpp was accidentally removed. I don't know whether this matters.

@sxrzh Good catch, changed it to EmitSetVerbatimTag.
I added a trailing \n that was missing in the file.

For answering a different comment about files line endings:
POSIX specs requires every line of a text file to end with a newline character, for some reasons the default of visual studio code doesn't add a newline character. (It should really be named 'end of line' character 😅)