chore: add Dependabot configuration and CI workflow for Rust project

Author: egorsmkv

.github/dependabot.yml

@@ -0,0 +1,12 @@
+version: 2
+
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: build
+
+on:
+  push:
+
+jobs:
+  build:
+    name: build
+
+    runs-on: ${{ matrix.os }}
+    
+    strategy:
+      matrix:
+        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: cargo build