Configure default code formatting rules for Holohub

[mocsharp]

Create rules to enforce standard code formatting for Holohub.

Background: In a recent PR, where I added a few lines of code for a small fix, my VS code settings autoformatted the entire file and sorted include statements to some C/C++ standards (C++ VS Code Extension). However, I had to revert to avoid introducing formatting changes, which wasted time because the application also needed to be tested again.

Ideally, we should:

• Define C++ formatting rules
• Define Python formatting rules
• Define Bash script formatting rules
• Update VS Code settings to suggest formatting extensions
• Update VS Code settings to enable format on close