feat: add -clean flag To remove Source Directory while uninstall

[AshokThangavel]

Summary

This PR introduces the ability to physically remove a module's source directory (orphaned folder) during the uninstallation process. It provides both manual control via a new command-line flag and environment-wide control via a global configuration setting.
fixes: #1033

Changes

CLI Enhancements

• Added -c and -clean modifiers to the uninstall command.
• When active, the command deletes the physical directory associated with the module after its logic is removed from the database.

Global Configuration

• Added a new setting: CleanOnUninstall in UniversalSettings.
• config set CleanOnUninstall 1: Enables automatic filesystem cleanup for all uninstalls.
• config set CleanOnUninstall 0: Default behavior (keeps folders).

Recursive Logic

• The cleanup process is fully compatible with the -r (recursive) flag, ensuring that an entire dependency tree and all associated directories are removed in a single command.

Verification & Test Results

A comprehensive unit test suite was executed to validate manual flags, global policy enforcement, and recursive cleanup.

Test Statistics:

• Status: PASSED ✅
• Assertions: 30
• Execution Time: 13.34s

Test Case Breakdown

ID	Test Scenario	Expected Result	Status
1	Standard Uninstall	Logic removed; Directory remains	Pass ✅
2	Uninstall with -c	Logic removed; Directory deleted	Pass ✅
3	Config CleanOnUninstall=1	Logic removed; Directory deleted (no flag)	Pass ✅
4	Recursive -r -c	Entire tree and all directories deleted	Pass ✅

Unit Test Log Snippet

zpm:USER>uninstall objectscript-math -c -v

[USER|objectscript-math]        Clean START
[USER|objectscript-math]        Unconfigure START
[USER|objectscript-math]        Unconfigure SUCCESS
Deleting class Math.Math
Deleting class Math.Utils
Deleting Math.INC
[USER|objectscript-math]        Cleanup: Removing source directory
[USER|objectscript-math]        Found source directory: /usr/irissys/ipm/objectscript-math/0.0.5/
[USER|objectscript-math]        Source directory successfully deleted
[USER|objectscript-math]        Clean SUCCESS