chore: Update CI configuration to enable test coverage and add coverage directory to .gitignore

Author: snobbee

.github/workflows/ci.yaml

@@ -34,7 +34,7 @@ jobs:
                   echo "NODE_ENV=test" >> packages/core/.env.test
 
             - name: Run tests
-              run: cd packages/core && pnpm test
+              run: cd packages/core && TEST_COVERAGE=1 pnpm test
 
             - name: Build packages
               run: pnpm run build

.gitignore

@@ -47,3 +47,5 @@ packages/plugin-coinbase/package-lock.json
 tsup.config.bundled_*.mjs
 
 .turbo
+
+coverage