Feature proposal: new CLI command / argument to remove old generated _templ.go files

[YiumPotato]

Context, I'm currently using Air for hot reload, and thus on file changes I make it run templ generate.

Say you create a .templ file (say, "foo.templ"), and eventually rename it (say "bar.templ"). foo_templ.go is still there.
Could lead to bugs or wasted time (specially for me since I was hiding all *_templ.go files in my ide)

Thus propose: templ generate --remove-old or a new templ remove-old to delete such old generated files would be nice. I suppose not by default to keep it backwards compatible.

If it sounds like a good idea lmk I could try make it and submit a PR.
[currently doing a weird unnessary regex rm hack deleting all _templ.go file in my templates before tmpl generate ls -d -1 "$PWD/internal/templates/"*.* | grep -P "^.*_templ\.go$" | xargs -d "\n" rm]

Love the project!

[a-h]

Glad you like templ! I see your point, it's confusing to rename a file, and then have the old Go code stuck around.

I think it would be best to make removing _templ.go files that don't have a corresponding .templ file the default, and add a command line flag to not remove "orphaned" generated files. So, the CLI flag would be templ generate --keep-orphaned-files.

Probably best to wait until #299 is merged before starting, because it changes the generate command a little.

[YiumPotato]

Done! #325

[a-h]

Thanks, for that, great job. It's merged in 13b1f8a