Heroku, Azure support, improve Infra, add resources fixed bugs

Add Support Heroku provider #218 #231 @aqche

Also adds the following resources:

• heroku_app
• heroku_addon
• heroku_account_feature
• heroku_addon_attachment
• heroku_app_config_association
• heroku_app_feature
• heroku_app_webhook
• heroku_build
• heroku_domain
• heroku_drain
• heroku_formation
• heroku_pipeline
• heroku_pipeline_coupling
• heroku_team_collaborator
• heroku_team_member

Add Support Azure provider #227 @aqche

Also adds the following resources:

• azurerm_resource_group

Datadog

• Add dashboard to readme #205 @Morsicus

AWS

• Add support for aws_cloudtrail #207 @aqche
• Removed unused sess arguments #213 @aqche
• Add support for aws_kinesis_stream #216 @aqche
• Fix ECS import issues #210 #217 @meshuga
• Add Elastic IP #223 @ktogo
• Add NAT Gateway #224 @ktogo
• Add VPC Peering Connection #225 @ktogo
• Fix alb Error: "vpc_id": this field cannot be set #209 #226 @sergeylanzman
• Add support for glue database #228 @kangaechu
• Add MSK #229 @meshuga
• Import global resources only once #230 @meshuga

Infra

• Implement New Flatmap Parser #222 @t0rr3sp3dr0
• Rewrite TfSanitize to Prevent Invalid Terraform Identifiers #220 @t0rr3sp3dr0
• Refactoring resource connections #229 @meshuga
• Fix issue #208 #212 @sergeylanzman
• Refactor NewResource -> NewSimpleResource where applicable #214 @aqche
• Reduce Trace and debug logs #217 @meshuga