Update function template documentation and enhance GitHub context ass…

[MariusStorhaug]

Description

This pull request includes changes to the tools/utilities/New-FunctionTemplate.ps1 file to update documentation and improve context assertion.

Function template update

• tools/utilities/New-FunctionTemplate.ps1
  • Replaced the general notes section with a title and link. [1]
  • Added the Assert-GitHubContext function to assert a GitHub contexts authentication types. [2]
  • Fixes 🚀[Feature]: Add a context validator, so we can add condition into highlevel functions #186

Type of change

• 📖 [Docs]
• 🪲 [Fix]
• 🩹 [Patch]
• ⚠️ [Security fix]
• 🚀 [Feature]
• 🌟 [Breaking change]

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas

[github-actions]

Module [GitHub - v0.11.14] published to the PowerShell Gallery.

[github-actions]

GitHub release for GitHub v0.11.14 has been created.