feat: Add `Actor` method `use_state` #123

Job	Run time
PR title check	5s
Code checks / Actions lint check	30s
Code checks / Spell check	5s
Doc checks / Doc checks / Docs check	1m 5s
Code checks / Type check / Type check (3.13)	9s
Code checks / Lint check / Lint check (3.13)	11s
Code checks / Lint check / Lint check (3.10)	14s
Code checks / Type check / Type check (3.10)	14s
Code checks / Type check / Type check (3.11)	9s
Code checks / Lint check / Lint check (3.12)	12s
Code checks / Lint check / Lint check (3.14)	13s
Code checks / Type check / Type check (3.12)	10s
Code checks / Lint check / Lint check (3.11)	10s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 37s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	52s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	51s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	58s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	49s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 38s
Code checks / Type check / Type check (3.14)	10s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 22s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	53s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 13s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 15s
Tests / Integration tests / Integration tests	0s
	15m 5s

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