feat: test vectors CI test workflow

Add a new workflow that checks if the test vectors
in the test folder match the ones in the CFRG spec.

Author: mmaker

.github/workflows/test-vectors.yml

@@ -0,0 +1,23 @@
+name: Verify Test Vectors
+
+on:
+  push:
+    paths:
+      - 'src/tests/spec/vectors/*.json'
+  pull_request:
+    paths:
+      - 'src/tests/spec/vectors/*.json'
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * 0'
+
+jobs:
+  verify-checksums:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          curl -sL https://raw.githubusercontent.com/mmaker/draft-irtf-cfrg-sigma-protocols/main/poc/vectors/duplexSpongeVectors.json -o /tmp/duplexSpongeVectors.json
+          [ "$(sha256sum src/tests/spec/vectors/duplexSpongeVectors.json | cut -d' ' -f1)" = "$(sha256sum /tmp/duplexSpongeVectors.json | cut -d' ' -f1)" ] || exit 1
+          curl -sL https://raw.githubusercontent.com/mmaker/draft-irtf-cfrg-sigma-protocols/main/poc/vectors/testSigmaProtocols.json -o /tmp/testSigmaProtocols.json
+          [ "$(sha256sum src/tests/spec/vectors/testSigmaProtocols.json | cut -d' ' -f1)" = "$(sha256sum /tmp/testSigmaProtocols.json | cut -d' ' -f1)" ] || exit 1