GUI: add 'Run Selection' and keyboard shortcut for partial code execution in Report Editor

[yvdabb]

Extending the 'Report Command' functionality, users should be able to execute specific subsets of code directly from the integrated Editor through the following methods:

• 'Run Selection' via Context Menu. Having selected a section of code within the Editor, clicking 'Run Selection' will execute the code directly, without the need to run the entire script (or copy the selection first to the 'Report Command' entry field).

• Keyboard Shortcut. Implement a keyboard shortcut (e.g. Ctrl/Shift + Enter) to execute the selected code segment.

The above feature is particularly useful for the user when testing or debugging only specific parts of the code.