Scoutsuite

Changes:
- Improved support for AWS
- Added support for KMS
- Added basic support for Secrets Manager
- Simplified evaluation of IAM policies in multiple rules
- Improved support for Azure
- Added support for App Service Web Apps
- Added support for Security Center Compliance Results
- Added support for Security Center Regulatory Compliance Results
- Improved support for GCP
- Improved partials and finding rationales
- Scans should complete **much** faster
- Improved support for OCI
- Improved error handing
- Support for scanning arbitrary compartments
- Improved Open Source project's processes
- Issue and PR templates
- CI/CD deployment, with the addition of `autopep8`
- Added a `--list-services` option to list available services to scan
- A bunch of bug fixes

Changes:
- Azure
- Adds support for scanning multiple subscriptions or a whole tenant in one go (see https://github.com/nccgroup/ScoutSuite/wiki/Azure#subscriptions)
- Adds a new authentication method (`--user-account-browser`), which allows authenticating with a user with MFA enabled, without the need for `azure-cli` (see https://github.com/nccgroup/ScoutSuite/wiki/Azure#user-credentials-via-browser)
- AWS
- Tweak support for executing in Lambda
- Adds tags for RDS resources
- Core
- Improves test coverage

**Warning** this implements backward-incompatible changes to:
- Azure CLI options
- Azure partials

Changes:

- Adds support for AWS ACM
- Improved UI
- Improved code quality
- Bug fixes

Changes:

- Improvements to the AWS & Azure reports
- Improvements to Azure Networks and Virtual Machines services' support
- Improvements to GCP Cloud Storage support
- Improved Azure rules
- New rules for AWS & Azure
- Added support for Aliyun OSS
- Improved test coverage
- Bug fixes

Changes:
- Improvement of Azure support
- Bug fixes

Minor fixes