devops: Add nextest test runner to CI

.github/workflows/ci.yaml

@@ -51,3 +51,24 @@ jobs:
 
       - name: Run clippy action
         uses: clechasseur/rs-clippy-check@v3
+
+  test:
+    name: stable / test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Rust stable
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+
+      - name: Install nextest
+        uses: taiki-e/install-action@v2
+        with:
+          tool: nextest
+
+      - name: Test with latest nextest release
+        uses: actions-rs/cargo@v1
+        with:
+          command: nextest
+          args: run --all-features

rig-core/Cargo.toml

@@ -8,8 +8,9 @@ description = "An opinionated library for building LLM powered applications."
 repository = "https://github.com/0xPlaygrounds/rig"
 
 [lib]
-name="rig"
-path="src/lib.rs"
+name = "rig"
+path = "src/lib.rs"
+doctest = false
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html