Add documentation to PdfMinerState #579

Job	Run time
Build sdist and wheels	9s
Test Windows (windows-latest, 3.10)	7m 45s
Test ubuntu-22.04 with Python 3.10	5m 4s
Test Windows (windows-latest, 3.11)	7m 19s
Test macOS (macos-latest, 3.10)	5m 38s
Test ubuntu-22.04 with Python 3.11	5m 2s
Test Windows (windows-latest, 3.12)	8m 14s
Test macOS (macos-latest, 3.11)	4m 45s
Test ubuntu-22.04 with Python 3.12	5m 29s
Test Windows (windows-latest, 3.13)	8m 52s
Test macOS (macos-latest, 3.12)	4m 58s
Test ubuntu-22.04 with Python 3.13	5m 12s
Test macOS (macos-latest, 3.13)	4m 45s
Test ubuntu-24.04 with Python 3.10	4m 51s
Test macOS (macos-13, 3.10)	7m 1s
Test ubuntu-24.04 with Python 3.11	4m 37s
Test macOS (macos-13, 3.11)	7m 16s
Test ubuntu-24.04 with Python 3.12	5m 17s
Test macOS (macos-13, 3.12)	7m 31s
Test ubuntu-24.04 with Python 3.13	4m 50s
Test ubuntu-24.04 with Python pypy3.10	10m 15s
Test macOS (macos-13, 3.13)	10m 21s
Build Ubuntu-based Docker image	23m 31s
Build Alpine-based Docker images	1m 31s
Deploy artifacts to PyPI	0s
Create GitHub release	0s
	2h 40m 13s

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