OAuth docs, including decisions

openedx/core/djangoapps/oauth_dispatch/docs/README.rst

...tch/docs/decisions/0001-record-architecture-decisions.rst

...pps/oauth_dispatch/docs/decisions/0002-migrate-to-dot.rst

...ns/0003-use-jwt-as-oauth-tokens-remove-openid-connect.rst

...dispatch/docs/decisions/0004-oauth-dispatch-as-router.rst

...ch/docs/decisions/0005-restricted-application-for-SSO.rst

...spatch/docs/decisions/0006-enforce-scopes-in-LMS-APIs.rst

...ch/docs/decisions/0007-include-organization-in-tokens.rst

...angoapps/oauth_dispatch/docs/how_tos/testing_manually.rst

...ps/oauth_dispatch/docs/images/oauth_playground_config.png

...uth_dispatch/docs/images/oauth_playground_request_uri.png

...ps/oauth_dispatch/docs/images/oauth_playground_scopes.png

...pps/oauth_dispatch/docs/images/oauth_playground_step2.png

...ps/oauth_dispatch/docs/images/oauth_playground_tokens.png

...ore/djangoapps/oauth_dispatch/dot_overrides/validators.py