Enhance Help Documentation Validation for Cmdlets (#548)

* build: added mechanisms to check for examples and parameters in docs

* docs: updated the contrtibution part

* docs: updated cmdlet documentation with parameters

* docs: updated cmdlet documentation with examples

* feat: set to version 7.15.1

chore: updated version

tests: corrected feed test for psdrive

chore: updated version to 7.13.1

build: try fix for pipeline publishing github

Unify date/time format and make it cultureInfo independent (#524)

* Unify date format and make it independent of specific cultureInfo

* moduleMessages.json should have correct datetime format dd/MM/yyyy HH:mm:ss

build: upgraded action tasks to v3 because of deprication

fix parameterSet ByID compability with previous API versions (#482)

Added Update-VSTeamGitRepositoryDefaultBranch (#475)

* - Added Update-VSTeamGitRepositoryDefaultBranch to allow for changing the default branch of a repository.
- Fixed bad link in README.md

* Clean up comments, and fixed/updated urls

* Added logic to only try to import vstem-lib.dll if exists and is not imported.

* Added fake Get-VSTeamGitRepository call (since pester doesn't recognize it as something when mocked)
Removed call to dot source common.ps1
Removed debug messages
Cleaned up comments
Bumped Version
Updated Changelog

* - Fixed default branch name check.
- Added logic to pull refs and validate branch name
- Updated call to use splatting for readability

* - Added mock for Get-VSTeamGitRef
- Added test for non-existent branch name

* - Added sample file for gitref call in Update-VSTeamGitRepositoryDefaultBranch

* removed some line in changelog

Co-authored-by: Bleattler <Robert.Bleattler@freedompay.com>
Co-authored-by: Sebastian Schütze <sebastian.schuetze@razorspoint.com>