add script to create coverage report manually

scripts/coverage.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+rm -rf target/coverage || true
+mkdir -p target/coverage
+
+echo "Running tests"
+RUST_LOG=mpvipc=trace RUSTFLAGS="-Cinstrument-coverage" LLVM_PROFILE_FILE="target/coverage/%p-%m.profraw" cargo test --all-features --release --no-fail-fast
+
+echo "Generating coverage report"
+grcov \
+  --source-dir . \
+  --binary-path ./target/release/deps/ \
+  --excl-start 'mod test* \{' \
+  --ignore 'tests/*' \
+  --ignore "*test.rs" \
+  --ignore "*tests.rs" \
+  --ignore "*github.com*" \
+  --ignore "*libcore*" \
+  --ignore "*rustc*" \
+  --ignore "*liballoc*" \
+  --ignore "*cargo*" \
+  -t html \
+  -o ./target/coverage/html \
+  target/coverage/