[Feature] Implement while loop statements

[Luna-Klatzer]

Is there an existing proposal for this?

• I have searched the existing issues

This feature does not exist in the latest version

• I am using the latest version

Proposal

Implement JS-like while-loop statements, which allow the repetitive execution of a block of code as long as a specific boolean condition is met. The syntax and behaviour should be exactly the same as in the JS implementation and follow the guidelines/docs of MDN while-loops.

Exact behaviour / changes you want

• Implement the new reserved keyword while.
• Add support for the while-loop syntax and implement proper semantic analysis for it.
• Add warnings for infinite empty while-loops.
• Add translation support for TypeScript and JavaScript ([Feature] Implement new translation target for JavaScript #208).

[Luna-Klatzer]

Implemented with #350 and scheduled for release in v0.10.0-alpha.6