POC: merging syntax repo

[bobzhang]

Things to do:

• Build needed targets in napkin parser for testing
• Move test cases here

cc @IwanKaramazow, would you list the needed targets for testing, I can add it to the build system
If you have some better ideas to do it, feel free to take over this PR

[IwanKaramazow]

The test suite contains:

• reanalyze, checks the parser for infinite loops and unhandled exceptions.
• A binary ./lib/test.exe that verifies internal parser apis based on these files
• the internal syntax cli binary: https://github.com/rescript-lang/syntax/blob/master/Makefile#L48 needed for test.sh

test.sh contains:

• parser tests, verifies that the correct ast is formed
• parser error tests, tests specific parser errors
• printer tests
• outcome printer tests
• conversion tests from Reason
• React ppx tests
• roundtrip tests: https://github.com/rescript-lang/syntax/blob/master/test.sh#L55

Every file in (https://github.com/rescript-lang/syntax/tree/master/tests) is necessary to provide full coverage of the current supported language.

I currently don't have any better ideas aside from copying the full repo and updating the makefile to point to the correct rescript-compiler files.

[kevinbarabash]

It would be nice to keep the full history of files that get copied over. For that reason it might make sense to do this in two PRs:

• simply copy files (with history) while maintaining the same workflow
• update the makefile, merge package.json files, move .github/workflows/ci.yml to the right location, etc.

[cristianoc]

@tsnobip you were interested in making progressi on this?

[cristianoc]

Though so many things have changed -- closing this as there would be little to salvage.