Add type-hints for hatch/plugin and hatch/template #2777

Job	Run time
Downstream builds with Python 3.8	34s
Downstream builds with Python 3.9	40s
Python 3.8 on Linux	2m 7s
Python 3.9 on Linux	1m 59s
Downstream builds with Python 3.10	36s
Python 3.10 on Linux	2m 1s
Downstream builds with Python 3.11	34s
Python 3.11 on Linux	2m 3s
Downstream builds with Python 3.12	37s
Python 3.12 on Linux	2m 33s
Python 3.8 on Windows	4m 4s
Python 3.9 on Windows	4m 12s
Python 3.10 on Windows	3m 51s
Python 3.11 on Windows	4m 15s
Python 3.12 on Windows	4m 44s
Python 3.8 on macOS	1m 37s
Python 3.9 on macOS	1m 32s
Python 3.10 on macOS	1m 9s
Python 3.11 on macOS	1m 5s
Python 3.12 on macOS	1m 11s
Report coverage	0s
check	2s
	41m 26s

Provide feedback