Documentation Kotlin

Closes #311 Every reviewer are welcome :)

Description

Set node engine version to "node": ">=20": we import node-types-config.json with with keyword to define type. This is only supported from Node v20.
Add documentation and tests for Kotlin
We count object declarations and expressions and companion objects for "classes" metric, because they are anonymous classes ( see Kotlin documentation)

Note: The Kotlin parser has a bug actually and does not parse the functional interface fun interface... correctly. This leads to uncorrect file metric calculation in "classes" and "functions" metric. There is already a PR for this bug, so I will not add any special handling to cover it for now. I open #324 to solve that.

Definition of Done

A PR is only ready for merge once all the following acceptance criteria are fulfilled:

[x] There are automated tests for newly written code and bug fixes
[x] All bugs discovered while working on this PR have been submitted as issues (if not already an open issue)
[x] Documentation (README.md, UPDATE_GRAMMARS.md) has been updated

Status	Category	Percentage	Covered / Total
🟢	Lines	94.94% (🎯 90%)	4550 / 4792
🟢	Statements	94.94% (🎯 90%)	4550 / 4792
🟢	Functions	94.78% (🎯 90%)	200 / 211
🟢	Branches	91.82% (🎯 90%)	539 / 587

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/parser/helper/language.ts	96.24%	86.66%	100%	96.24%	178-183, 187-188

MaibornWolff / metric-gardener

Documentation Kotlin #325

Documentation Kotlin

Description

Definition of Done

Screenshots or gifs

Coverage Report