feat(template): implement html and markdown templating for reflections #612

Job	Run time
Clippy (stable)	26s
Clippy (Future) (beta)	22s
Rustfmt	15s
Clippy (Future) (nightly)	25s
Test (stable, macos-latest)	1m 43s
Build docs (stable, macos-latest)	29s
Test (stable, ubuntu-latest)	58s
Check MSRV (pace-rs, 1.74.1)	2m 48s
ubuntu / stable / features	2m 31s
Test (stable, windows-latest)	2m 34s
Build docs (stable, ubuntu-latest)	13s
Check MSRV (pace_core, 1.74.1)	2m 10s
Build docs (stable, windows-latest)	55s
Test (beta, macos-latest)	1m 33s
Check MSRV (pace_cli, 1.74.1)	2m 20s
Test (beta, ubuntu-latest)	1m 1s
Test (beta, windows-latest)	2m 20s
Result (CI)	0s
	23m 3s

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