Add peer support functionality and UI

app/composables/usePeerSupport.js

@@ -0,0 +1,16 @@
+export const usePeerSupport = () => {
+  const updateSettings = async (settings) => {
+    return await $fetch('/api/members/me/peer-support', {
+      method: 'PATCH',
+      body: settings
+    });
+  };
+
+  const getSupporters = async (topic) => {
+    return await $fetch('/api/peer-support', {
+      query: topic ? { topic } : {}
+    });
+  };
+
+  return { updateSettings, getSupporters };
+};