Review unnecessarily limiting languages

[therealnb]

Describe the issue

While investigating #1039 we found that we were limiting the languages supported here.

This was originally because these were the languages insight supported, but codegate actually supports more (e.g. shells for suspicious commands).

The ticket here is to revisit this and see if the language limiting and mapping is still appropriate.

Steps to Reproduce

Step through the code when there is some shell script in a script in copilot.

Operating System

MacOS (Arm)

IDE and Version

vscode

Extension and Version

main

Provider

GitHub Copilot

Model

copilot

Codegate version

main

Logs

No response

Additional Context

No response