Move everything to a workspace

.github/dependabot.yml

@@ -22,6 +22,6 @@ updates:
     schedule:
       interval: "weekly"
   - package-ecosystem: "cargo"
-    directory: "relay/"
+    directory: "rust/"
     schedule:
       interval: "weekly"

.github/workflows/rust.yml

@@ -2,12 +2,12 @@ name: Rust CI
 on:
   pull_request:
     paths:
-      - 'relay/**'
+      - 'rust/**'
   push:
     branches:
       - master
     paths:
-        - 'relay/**'
+        - 'rust/**'
 
 # Cancel old workflow runs if new code is pushed
 concurrency:
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     defaults:
       run:
-        working-directory: ./relay
+        working-directory: ./rust
     steps:
       - uses: actions/checkout@v2
       - run: cargo fmt -- --check

rust/Cargo.toml

@@ -0,0 +1,2 @@
+[workspace]
+members = ["relay"]