Implemented Lambda Expressions

[lorenzholzbauer]

What type of change does this PR perform?

• [ ] Info or documentation change (Non-breaking change that updates repo info files (e.g. README.md, CONTRIBUTING.md, etc.) or online documentation)
• [ ] Website (Change that changes the design or functionality of the websites or docs)
• [ ] Development or internal changes (These changes do not add new features or fix bugs, but update the code in other ways)
• [ ] Bug fix (Non-breaking change which fixes an issue)
• [x] New feature (Non-breaking change which adds functionality)
• [ ] Breaking change (Major bug fix or feature that would cause existing functionality not to work as expected.)
• [ ] Requires a documentation update, as it changes language or compiler behaviour

Summary

This PR introduces the implementation of lambda expressions in the JavaScriptTargetCodeGenerator class. It enables the translation of lambda expressions from Kipper to JS or TS.

Closes #572

Detailed Changelog

Added

• Added Lambda Expressions, which are anonymous functions that can be used as expressions. (#572)
• New class LambdaExpression, which represents an AST lambda expression.
• New interfaces:
  • LambdaExpressionSemantics, which represents the semantics of a lambda expression.
  • LambdaExpressionTypeSemantics, which represents the type semantics of a lambda expression.

Does this PR create new warnings?

None.

Linked issues or PRs

• [x] #572

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 89.88764% with 9 lines in your changes missing coverage. Please review.

Project coverage is 83.78%. Comparing base (7b38fe2) to head (82d9b6e).

Files	Patch %	Lines
...expressions/lambda-expression/lambda-expression.ts	89.74%	3 Missing and 1 partial :warning:
kipper/core/src/compiler/ast/ast-generator.ts	82.35%	0 Missing and 3 partials :warning:
kipper/target-js/src/code-generator.ts	85.71%	1 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev-next #650 +/- ## ============================================ + Coverage 83.66% 83.78% +0.11% ============================================ Files 219 222 +3 Lines 3850 3909 +59 Branches 428 432 +4 ============================================ + Hits 3221 3275 +54 - Misses 447 451 +4 - Partials 182 183 +1 ```

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