Add data source specific icons to data and join steps in the notebook editor (#42982)

frontend/src/metabase-lib/types.ts

...onents/notebook/NotebookDataPicker/NotebookDataPicker.tsx

...y_builder/components/notebook/NotebookDataPicker/index.ts

...er/components/notebook/steps/DataStep/DataStep.styled.tsx

...y_builder/components/notebook/steps/DataStep/DataStep.tsx

...components/notebook/steps/DataStep/DataStep.unit.spec.tsx

...nts/notebook/steps/JoinStep/JoinComplete/JoinComplete.tsx

...omponents/notebook/steps/JoinStep/JoinDraft/JoinDraft.tsx

...steps/JoinStep/JoinTablePicker/JoinTablePicker.styled.tsx

...tebook/steps/JoinStep/JoinTablePicker/JoinTablePicker.tsx

...query_builder/components/notebook/steps/SummarizeStep.tsx

...ader/components/QuestionDataSource/QuestionDataSource.jsx

...rc/metabase/ui/components/buttons/UnstyledButton/index.ts

frontend/src/metabase/ui/components/buttons/index.ts

src/metabase/lib/card.cljc