Fast indexing (#58)

* Made method to getting singular media details; Renamed other related method

* Takes a fun and flirty digression to remove abstractions around yt-dlp since I'm 100% committed to using it exclusively

* Removed commented test code

* Lays the groundwork for fast indexing

* Added module for working with youtube RSS feed

* Added methods to kick off indexing workers from RSS response

* Improve short detection (#59)

* Made media attribute-related yt-dlp calls return a struct

* Added shorts attribute to media items

* Added ability to discern a short from yt-dlp response

* Updated search to use new shorts attribute

* Fast index UI (#63)

* Added fast_index field and adds it to source form

* Added fast indexing to source changeset operations

* Added fast indexing worker and updated other modules to start using it

* Handled fast index worker on source update

* Add support modals (#65)

* Added fast indexing upgrade modal

* Improved modal on smaller screens

* Updated links to work again

* Added donation modal

* Reverted source fast index to 15 minutes

* Removed unneeded HTML attributes from old alpine approach

lib/pinchflat_web/controllers/sources/source_html/new.html.heex

@@ -1,5 +1,5 @@
 <div class="mb-6 flex gap-3 flex-row items-center">
-  <.link :if={!Settings.get!(:onboarding)} navigate={~p"/sources"}>
+  <.link :if={!Settings.get!(:onboarding)} href={~p"/sources"}>
     <.icon name="hero-arrow-left" class="w-10 h-10 hover:dark:text-white" />
   </.link>
   <h2 class="text-title-md2 font-bold text-black dark:text-white ml-4">New Source</h2>