Mypy-boto3-builder

Fixed
- `[s3]` Allow `StreamingBody` for blob-type arguments. Potentially affects other services.

Fixed
- `[botocore-stubs]` prevent import of Typed Dicts from `exceptions` module
- `[botocore-stubs]` narrowed down stubs for `auth` module
- `[botocore-stubs]` narrowed down stubs for `client` module
- `[botocore-stubs]` narrowed down stubs for `errorfactory` module
- `[botocore-stubs]` narrowed down stubs for `regions` module
- `[botocore-stubs]` narrowed down stubs for `parsers` module
- `[botocore-stubs]` narrowed down stubs for `history` module
- `[botocore-stubs]` narrowed down stubs for `retryhandler` module
- `[builder]` added missing docstrings
- `[services]` unnamed literals should always have a valid PEP8 class name

Fixed
- `[services]` All methods generated from botocore shapes are now keyword-only
- `[botocore-stubs]` incorrect annotations for `botocore.exceptions.ClientError`

Fixed
- `[cloudformation]` added a temporary fix for `ResourceStatusType` literal

Added
- `[services]` added [Proton](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/proton.html) service support

Changed
- `[docs]` Keyword-only method arguments are marked correctly in documentation

Fixed
- `[botocore-stubs]` fixed `ClientError` type annotation

Changed
- `[boto3-stubs]` now depend on `botocore-stubs`
- `[botocore-stubs]` all exceptions kwargs are annotated properly