Language Overview in Readme

[JanWittler]

This PR adds an overview of the supported programming languages, meta models, and text (I did not find a proper generic term, thus using language) with their supported versions and the CLI argument name. Additionally, the used parser and the state of the language module are listed.

[tsaglam]

Great idea!

[JanWittler]

Seems this suggestion is accepted. I did not find any documentation on the supported C++ and Scheme version (and Python only 3 but not which minor) which is why there is currently a question mark. I have some experience with C++ so might be able to detect the supported version but for Scheme and Python I am completely unexperienced. So help wanted on detecting the correct version for these languages.

[tsaglam]

For Python it's something like 3.4 or 3.5, maybe I can find it again.
EDIT: It is 3.6, the hint is hidden in #34, and its date matches as well.

[tsaglam]

A was also thinking of adding a state label for each frontend:

• established or mature (e.g. Java)
• beta (e.g. EMF or C#)
• legacy or outdated (e.g. C++ or Text)
• unknown (Scheme)

Not sure what the ideal set of labels is. @jplag/maintainer any ideas?

EDIT: The idea would be that JPlag produces a warning for legacy and unknown frontends when using them.

[tsaglam]

Current state:

Language	Version	CLI Argument Name	state	parser
Java	17	java	mature	JavaC
C++	11	cpp	legacy	JavaCC
C#	8	csharp	beta	ANTLR 4
Go	1.17	golang	beta	ANTLR 4
Kotlin	1.3	kotlin	beta	ANTLR 4
Python	3.6	python3	legacy	ANTLR 4
R	3.5.0	rlang	beta	ANTLR 4
Scala	2.13.8	scala	beta	Scalameta
Scheme	?	scheme	unknown	JavaCC
EMF Metamodel	2.25.0	emf-metamodel	alpha	EMF
EMF Metamodel (dynamic)	2.25.0	emf-metamodel-dynamic	alpha	EMF
Text (naive)	-	text	legacy	ANTLR

[sonarqubecloud]

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