Added a new entrypoint called searchSwhid. Search using a valid
SWHID will return a searchresult connection. The list will have
a single object in most of the cases, but could return multiple items.
Result object will be available in the target field.

Related to T4263

The actual image should be built out of the swh-apps:/apps/swh-charts repository.

Related to T4135

which is a noop

Related to T4135

Related to T4135

Related to T4135

Remove unnecessary functions in base_connection; properties can
be overridden directly in the sub class

Related to T4261

- Drop the __call__ function from base resolvers
- Rename unused schema fields to use python convention
- Improve doc strings

Add a get_branches function that can be used by test functions to query
snapshot branches with variable parameters.
Add a utility funtion to build query params string from arguments.
Change origin connection test to use the new utility function

Replace f-strings with query variables
Related to T4306

Move the get query to a seprarate function to make adding future tests easy.

Related to T4306

Logic to validate first and after arguments in pagination requests.
PaginationError will be raised on an invalid argument.

Related to T4261

A branch target can be a snapshot, alias, revision, release, content or a directory.
This commit adds support for Snapshot, Content and Directory objects.

Related to T4309

This will add the possibility to get items in a connection from any
arbitrary position. Generic implementation is using item index along
with the offset (after argument) to generate a cursor

Fixes T4291

Add type hints for parent objects in a resolver

Related to T4261

re-use the dataset in swh-model

Related to T4261

Changes to fix the bug when gunicorn is used with an application factory.
Makefile and docker-compose changes to run the app locally in both
ASGI and WSGI servers.

A type with two fields, text and base64, is returned for every binary string.
Any decode error in the text field will be ignored.

Related to: T4261

Related to: T4261

- in-memory storage and dummy flask app for tests
- Dummy storage data to test origin type
- Functional tests for OriginNode and OriginConnection

Related to T3932

Dependencies should be pinned only when required to avoid issues in
other swh modules when installing full swh environment.