ci: add workflow_dispatch (#11)

Author: Daniel-Aaron-Bloom

.github/workflows/solana.yml

@@ -1,6 +1,7 @@
 name: solana
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main

.github/workflows/universal-rs.yml

@@ -1,6 +1,7 @@
 name: universal-rs
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main
@@ -73,4 +74,4 @@ jobs:
           toolchain: ${{ env.RUSTC_VERSION }}
           components: rustfmt
       - run: cargo fmt --all --check
-        working-directory: ./universal/rs
+        working-directory: ./universal/rs