Mypy-boto3

Fixed
- `[botocore-stubs]` use `AWSRequest` in type annotations for `botocore.auth.BaseSigner` and subclasses

Added
- `[services]` new `ServiceName` literal as `from <module>.literals import ServiceName`

Changed
- `[boto3-stubs]` always generated for all available service names
- `[builder]` updated `black` to `20.9b0`
- `[services]` `Dict` in input shapes replaced with `Mapping`
- `[services]` `List` in input shapes replaced with `Sequence`

Fixed
- `[pinpoint]` `__EndpointTypesElementType` literal renamed to `EndpointTypesElementType` to allow importing

Added
- `[botocore-stubs]` cross-checked and added all missing stubs

Changed
- `[docker]` Updated `regex`
- `[builder]` Added compatibility with latest `pyright`

Fixed
- `[services]` injected `boto3` methods do not require keyword arguments
- `[services]` `PageIterator`/`paginate` methods are annotated properly
- `[builder]` `check_output` shows `pyright` errors properly

Notes

Thank you for your contributions! More and more people start using `boto3-stubs`. Your bug reports, feature requests, and pull requests help to improve code quality in about **one million projects**!

Keep on keeping on!

Changed
- `[docker]` Rebased to Python 3.9.6
- `[services]` `resource.meta` has a custom `<name>ResourceMeta` for each service

Fixed
- `[services]` `resource.meta.client` uses correct service client class instead of `BaseClient`
- `[botocore-stubs]` Added missing annotations, cross-checked with `mypy.stubtest`
- `[botocore-stubs]` `ResourceMeta` preserves proper class on `copy`
- `[docs]` Fixed typo `buider` -> `builder`
- `[docs]` Fixed invalid imports in `boto3-stubs`
- `[docs]` Fixed cleanup for `boto3-stubs` module, it was breaking docs build

Notes

- Supported services are no longer hardcoded, so new boto3 services are supported as soon as they are released
- Compatibility with `conda-forge` builds
- New daily sanity check for all generated packages to ensure stability

Added
- `[builder]` Supported services are no longer hardcoded
- `[builder]` `--list-services` CLI flag to output a list of supported services
- `[ci]` `Sanity check` workflow to check generated packages daily

Changed
- `[boto3-stubs]` Doc links now point to latest `boto3` docs
- `[botocore-stubs]` Doc links now point to latest `boto3` docs
- `[ci]` `check_output` runs tests with `mypy` as well
- `[boto3-stubs]` Requires non-strict versions of subpackages, five micro releases below the current (should fix `conda-forge` builds)
- `[docker]` Uses strict `regex==2021.7.6` package version
- `[builder]` Updated `black` and `isort`

Fixed
- `[boto3-stubs]` Removed Generics from `boto3.resouces.collection`
- `[builder]` Potential infinite recursion while working with paths
- `[builder]` Removed aggressive cleanup of unused generated files

Notes

This is an urgent bugfix, please update `boto3-stubs` from `1.17.103` to `1.17.103.post1`

Fixed
- `[services]` Collections are loosely typed again, they were broken in `4.22.0`
- `[builder]` Added `Python 3.10` classifier to all generated packages