chore: add codecov.yml. check it posts comment

.github/codecov.yml

@@ -0,0 +1,9 @@
+# Settings via https://docs.codecov.com/docs/common-recipe-list
+coverage:
+  status:
+    project:
+      default:
+        informational: true
+comment:
+  layout: " diff, flags, files"
+  behavior: default

.github/workflows/build-test.yaml

@@ -244,12 +244,18 @@ jobs:
     - name: Check that the collector compiles
       run: |
         cargo check --locked --manifest-path collector/Cargo.toml
-    # - name: Check that the Windows node runner service compiles (gnu toolchain, disable embedded resources)
-    #   run: |
-    #     cargo check --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/Cargo.toml --workspace --no-default-features
-    # - name: Check that the Windows installer custom action library compiles (gnu toolchain)
-    #   run: |
-    #     cargo check --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/installer/custom-actions/Cargo.toml --workspace
+    - name: Check that the Windows node runner service compiles (gnu toolchain, disable embedded resources)
+      # Instrument coverage flag doesn't seem to be supported in windows target
+      env:
+        RUSTFLAGS: ""
+      run: |
+        cargo check --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/Cargo.toml --workspace --no-default-features
+    - name: Check that the Windows installer custom action library compiles (gnu toolchain)
+      # Instrument coverage flag doesn't seem to be supported in windows target
+      env:
+        RUSTFLAGS: ""
+      run: |
+        cargo check --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/installer/custom-actions/Cargo.toml --workspace
     - name: Run clippy (without extra features)
       run: |
         cargo clippy --locked --manifest-path concordium-node/Cargo.toml --all -- -D warnings
@@ -262,20 +268,24 @@ jobs:
     - name: Run clippy on collector
       run: |
         cargo clippy --locked --manifest-path collector/Cargo.toml -- -D warnings
-    # - name: Run clippy on Windows node runner service
-    #   run: |
-    #     cargo clippy --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/Cargo.toml --all --no-default-features -- -D warnings
-    # - name: Run clippy on Windows installer custom action library
-    #   run: |
-    #     cargo clippy --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/installer/custom-actions/Cargo.toml --all -- -D warnings
+    - name: Run clippy on Windows node runner service
+      # Instrument coverage flag doesn't seem to be supported in windows?
+      env:
+        RUSTFLAGS: ""
+      run: |
+        cargo clippy --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/Cargo.toml --all --no-default-features -- -D warnings
+    - name: Run clippy on Windows installer custom action library
+      # Instrument coverage flag doesn't seem to be supported in windows?
+      env:
+        RUSTFLAGS: ""
+      run: |
+        cargo clippy --locked --target x86_64-pc-windows-gnu --manifest-path service/windows/installer/custom-actions/Cargo.toml --all -- -D warnings
     - name: Test Rust crates (without extra features)
       run: |
         cargo test --manifest-path concordium-node/Cargo.toml --all
     - name: Test Rust crates (with feature 'network_dump')
       run: |
         cargo test --manifest-path concordium-node/Cargo.toml --all --features=network_dump
-
-    # WIP: coverage reporting:
     - name: Check for .profraw files
       run: |
         find . -type f -name "*.profraw"