Enhance 'tags' feature for all the resources

[Sum123it]

Need tags feature with interactive features like we have aws and gcp resources.

We should be able to do like this

describe any_azure_resource('resource') do
  its('tags_hash') { should include('Contact' => 'foo') }
  its('tags_hash') { should include('Contact') }                  # Regardsless of the value
end

also include below features:

any_azure_resource.where(tags: /"created_by"=>/)

[Sum123it]

@omerdemirok - Do we have an update on the major enhancements of Azure Pack?. Eagerly waiting!

[omerdemirok]

@Sum123it , hopefully next week, I'll put up a PR for that 🤞