Feature request: toggle-able file associations on installer

[OrangeChannel]

Aegisub/packages/win_installer/fragment_associations.iss

Lines 38 to 40 in 75fc5f3

	[Registry]
	; File type registration
	; Application registration for Open With dialogue

[1:43 AM] Ryan: there is significant benefit to being able to compile without lgpl so no, i would not say ffms2 should be assumed to be the only a/v provider
[1:43 AM] Ryan: even if it's the default for most people
[2:45 AM] Ryan: there are various providers you can build with
[2:45 AM] Ryan: and it's not hard to add another if there was some reason you'd want to
[2:46 AM] Ryan: it's probably worth going and making the extensions registered based on the providers available to people
[2:46 AM] Ryan: the configuration flags should be imported into the installer
[2:46 AM] Ryan: the avisynth one is iirc just calling directshowsource?