Add copilot-setup-steps.yml to enable larger runner for Copilot

Co-authored-by: Steake <530040+Steake@users.noreply.github.com>

Author: Copilot

.github/copilot-setup-steps.yml

@@ -0,0 +1,21 @@
+# Configuration for GitHub Copilot Coding Agent
+# This file specifies the runner and setup steps for Copilot
+
+runs-on: ubuntu-22.04-xl
+
+steps:
+  - name: Install Rust toolchain
+    uses: dtolnay/rust-toolchain@stable
+    with:
+      components: rustfmt, clippy
+
+  - name: Cache cargo registry
+    uses: actions/cache@v4
+    with:
+      path: |
+        ~/.cargo/registry
+        ~/.cargo/git
+        target
+      key: ${{ runner.os }}-cargo-stable-${{ hashFiles('**/Cargo.lock') }}
+      restore-keys: |
+        ${{ runner.os }}-cargo-