added next-intl, composed next-auth and next-intl in middleware, fixed some bugs, completed details page, added google auth

src/app/[locale]/volunteers/Volunteers.scss

@@ -0,0 +1,21 @@
+.volunteers {
+  display: flex;
+  flex-direction: column;
+  gap: 40px;
+
+  h2 {
+    width: fit-content;
+  }
+}
+
+@media screen and (max-width: 768px) {
+  .volunteers {
+    gap: 30px;
+  }
+}
+
+@media screen and (max-width: 550px) {
+  .volunteers {
+    gap: 20px;
+  }
+}