CATROID-909: Enable evaluation of user-defined functions in formulas

[harshsomankar123-tech]

Description

Resolves:
CATROID-909
https://catrobat.atlassian.net/browse/CATROID-909

Summary of changes:
This PR enables the evaluation of user-defined reporter functions within formulas. This allows users to create custom logic that returns a value and use it directly inside other bricks' formula fields.

Key Implementations:

• Execution & Reporting: When a user-defined function is included in a formula, its definition script executes with the provided parameters. Reaching a "Report" brick correctly halts the definition script's execution and returns the formula field's value to the calling formula.
• Default Value Handling: If a script finishes without reaching a "Report" brick, the formula gracefully falls back to receiving 0 as the result.
• Concurrency: Function evaluation is designed to be non-blocking, ensuring other scripts in the project continue to run in parallel without interruption.
• Recursion Support: Implemented call stack propagation to support recursive calls, allowing functions to reliably call themselves or other functions.

Checklist for this pull request

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[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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