feat: Add `Actor` method `use_state` #117

Job	Run time
PR title check	5s
Code checks / Actions lint check	45s
Code checks / Spell check	5s
Code checks / Type check / Type check (3.12)	11s
Code checks / Lint check / Lint check (3.14)	14s
Code checks / Lint check / Lint check (3.11)	18s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	49s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	57s
Code checks / Lint check / Lint check (3.13)	13s
Code checks / Type check / Type check (3.11)	9s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 41s
Code checks / Type check / Type check (3.14)	17s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 17s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	53s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	50s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 29s
Code checks / Type check / Type check (3.10)	9s
Code checks / Lint check / Lint check (3.10)	10s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 39s
Doc checks / Doc checks / Docs check	56s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 15s
Code checks / Type check / Type check (3.13)	11s
Code checks / Lint check / Lint check (3.12)	9s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	56s
Tests / Integration tests / Integration tests	0s
	15m 38s

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