feat: add the community-funded Homarr assistant provider (#6563)

* Add Homarr provider proxy foundation

* Complete Homarr provider integration

* Harden Homarr provider integration

* Address Homarr provider review feedback

* Address CodeRabbit provider feedback

* Localize provider errors

* Handle provider activity load failures

* docs: improve workshop and homepage

* Harden Homarr provider limits

* fix: harden the Homarr provider

* fix: address provider review feedback

* fix: clarify provider request accounting

* feat: complete the Homarr provider endpoint

* fix: terminate invalid provider streams

apps/docs/static/img/opencollective.svg

@@ -0,0 +1,7 @@
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+  <title>OpenCollective</title>
+  <path
+    fill="#7FADF2"
+    d="M12 0C5.373 0 0 5.373 0 12s5.373 12 12 12c2.54 0 4.894-.79 6.834-2.135l-3.107-3.109a7.715 7.715 0 1 1 0-13.512l3.107-3.109A11.943 11.943 0 0 0 12 0zm9.865 5.166-3.109 3.107A7.67 7.67 0 0 1 19.715 12a7.682 7.682 0 0 1-.959 3.727l3.109 3.107A11.943 11.943 0 0 0 24 12c0-2.54-.79-4.894-2.135-6.834z"
+  />
+</svg>