Internal Release v0.1.1

- implement `Prompt`
- adjust Tool approach
- update readme for tool calling
- document usage of `Prompt`

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: CI
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        entry:
+          - { ruby: 3.2, allowed-failure: false }
+          - { ruby: 3.3, allowed-failure: false }
+          - { ruby: 3.4, allowed-failure: false }
+          - { ruby: head, allowed-failure: true }
+    name: Test Ruby ${{ matrix.entry.ruby }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.entry.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake test
+        continue-on-error: ${{ matrix.entry.allowed-failure }}