fix: ensure nested dataclasses in state accessors are loaded properly

[aorumbayev]

Proposed Changes

• Minor bug fix where structs returned from state accessors wouldn't load the nested dataclasses properly (reported by @cusma)
• Renaming global struct example to structs and adding extra test for box local state and global state accessors with nested dataclasses (both from method calls and from state)
• Reusing, now moved, CommonAppCallParams and CommonAppCreateCallParams from algokit-utils-py

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/algokit_client_generator
__main__.py	2	2	0%	1–3
cli.py	48	48	0%	1–87
document.py	82	7	91%	44, 47, 49–50, 55, 74–75
generator.py	31	1	97%	23
spec.py	207	16	92%	86, 116–119, 219–223, 253, 269, 350–351, 395, 410
utils.py	219	48	78%	11, 20, 24, 28, 32, 36, 40, 44, 55, 58, 63–64, 75–76, 82–84, 89–91, 94–96, 99, 102, 105, 108–110, 159–160, 194, 198, 201–202, 218, 220, 231–232, 249, 261–264, 268, 278, 281, 283
src/algokit_client_generator/generators
composer.py	51	1	98%	29
typed_client.py	326	8	98%	59, 188, 287, 586, 676, 686, 725, 836
typed_factory.py	219	3	99%	64, 94, 226
TOTAL	1256	134	89%

Tests	Skipped	Failures	Errors	Time
42	0 💤	0 ❌	0 🔥	19.583s ⏱️