Add social card #758

Job	Run time
Build docs & run doctests	37s
Check types using pyright	25s
Verify dev env (ubuntu-latest)	25s
Verify dev env (windows-latest)	37s
Tests & Mypy on 3.7	42s
Tests & Mypy on 3.8	1m 6s
Tests & Mypy on 3.9	1m 11s
Tests & Mypy on 3.10	1m 29s
Tests & Mypy on 3.11	1m 30s
Tests & Mypy on 3.12	1m 44s
Tests & Mypy on pypy-3.8	1m 0s
Tests & Mypy on pypy-3.9	1m 3s
Tests & Mypy on pypy-3.10	1m 2s
Combine & check coverage.	7s
required-checks-pass	3s
	13m 1s

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