Fix repo listing not displaying all repos

`Show::All` which is the default value should return all values obtained
from `storage.repositories()`.
This commit adds a `Show::Contributor` enum variant to only get repos
that the user has forked, initialized or contributed in some way.

src/components/HomeSidebar.svelte

@@ -151,6 +151,22 @@
         </div>
         <!-- svelte-ignore a11y_click_events_have_key_events -->
         <!-- svelte-ignore a11y_no_static_element_interactions -->
+        <div
+          class="tab"
+          class:active={activeTab.filter === "contributor"}
+          onclick={() =>
+            router.push({
+              resource: "home",
+              activeTab: "contributor",
+            })}>
+          <div class="global-flex">
+            <Icon name="user" />
+            <div>Contributor</div>
+          </div>
+          <div class="global-counter">{repoCount.contributor}</div>
+        </div>
+        <!-- svelte-ignore a11y_click_events_have_key_events -->
+        <!-- svelte-ignore a11y_no_static_element_interactions -->
         <div
           class="tab"
           class:active={activeTab.filter === "private"}