WIP: feat: Add templ support #329

Job	Run time
test (ubuntu-latest, 28.2, false)	51s
test (ubuntu-latest, 29.3, false)	59s
test (macos-latest, 28.2, false)	1m 56s
test (macos-latest, 29.3, false)	2m 47s
test (windows-latest, 28.2, false)	57s
test (windows-latest, 29.3, false)	1m 31s
test (ubuntu-latest, 26.3, false)	1m 14s
test (windows-latest, 26.3, false)	2m 2s
test (ubuntu-latest, 27.2, false)	56s
test (windows-latest, 27.2, false)	1m 9s
test (ubuntu-latest, snapshot, true)	1m 11s
test (macos-latest, snapshot, true)	1m 23s
test (windows-latest, snapshot, true)	2m 6s
	19m 2s

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