Add flags to the code coverage config for per-folder coverage (#16)

Update coverage configuration

.github/workflows/coverage.yml

@@ -17,24 +17,25 @@ jobs:
           toolchain: nightly
           override: true
 
-      - name: Run cargo test
+      - name: Run cargo test (fa-compression)
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --all-features --no-fail-fast
+          args: --all-features --no-fail-fast -p fa-compression
         env:
           CARGO_INCREMENTAL: 0
           RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
           RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
 
-      - name: Gather coverage information
+      - name: Gather coverage information (fa-compression)
         id: coverage
         uses: actions-rs/[email protected]
 
-      - name: Upload coverage reports to Codecov
+      - name: Upload coverage reports to Codecov (fa-compression)
         uses: codecov/[email protected]
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ${{ steps.coverage.outputs.report }}
+          flags: fa-compression
           verbose: true
           fail_ci_if_error: true

codecov.yml

@@ -0,0 +1,15 @@
+coverage:
+  status:
+    project:
+      default:
+        target: 90%
+      fa-compression:
+        target: 90%
+        flags:
+          - fa-compression
+
+flags:
+  fa-compression:
+    paths:
+      - fa-compression
+    carryforward: true