thunderbird: rewrite

This is a large scale rework of the package, here's a change summary:
    * Organized inputs (1/line, except conditionals)
    * Introduced alsaSupport, pulseaudioSupport, waylandSupport
    * enableGTK3 -> gtk3Support
    * enableCalendar -> calendarSupport
    * Organized buildInputs, nativeBuildInputs (1/line)
    * Corrected native/buildInputs separation
    * Ported over fixes/changes from Firefox
    * Enabled sound, webp, vpx, rust-SIMD, necko-wifi
    * Removed manual wrapping
    * Lifted makeDesktopItem out of string section, into Nix
    * Correctly set bindgen options
    * Added lovesegfault as maintainer
    * New url which uses https
This is non-authoritative, look at the diff for further info.