Retry, rate limit, circuit breaker and caching cmdlets

A retry function used when calling executables

API utils for Azure and Graph APIs

Runs "dotnet test" and use the trx logger result file to collect failed tests. Then reruns the failed tests and reports the final result.

Building blocks for higher level scripts and modules. Abstractions like retry logic and simple helper functions to minimize repetitive code in higher level components (scripts, modules, etc.)