[ENHANCEMENT] Base textures aren't added when bundling mods AND modpacks textures

[Juknum]

It is currently not possible to get the bases files through the mods or modpacks page, this is what I would like to see:

• We should be able to: automatically have vanilla textures, forge & fabric bases textures into the bundled modpack resource pack;
• This should also be done for the mods page, though having a checkbox to enable/disable it would be a plus (as downloading 1 one does not always mean: I want the texture for the mods & vanilla + forge + fabric)

PS: I don't want to distinguish any mods from forge's & fabric's mod loader as some of them support both, so it would result in the same output as choosing between them anyway.