[CI] Test suites update and coverage

[JonnyTran]

We needed to update argilla's unit test suite by adding additional tests with the extralit-specific changes and argilla-specific changes:

argilla-server/tests/

• Workspace bucket create/delete
• Workspace document upload/list
• Workspace files upload/fetch/
• Workspace models
• Get record users submitted responses as suggestions

argilla tests

• CLI schemas upload/list/delete
• dataset add_document and delete_document at argilla/tests/integration/client/feedback/dataset/remote/test_dataset.py
• Workspace add, get, update schemas at argilla/src/argilla/client/workspaces.py

extralit tests:

• chat/ endpoints
• extraction/ endpoint
• Upload schemas
• Pip install extralit[pdf]

argilla-frontend/tests/

• Get pdf file with proper user permissions
• QuestionsForm increment duration on save/submit draft
• Retrieve suggestions from other responses (excluding self-response)
• After update workspace schemas, fetch schema should notice new schema version update
• Retrieve Segments on document