Add run subcommand

[taiki-e]

Closes #68

$ cargo llvm-cov run --help
cargo-llvm-cov-run 

Run a binary or example and generate coverage report

USAGE:
    cargo llvm-cov run [OPTIONS] [-- <ARGS>...]

ARGS:
    <ARGS>...
            Arguments for the test binary

OPTIONS:
        --json
            Export coverage data in "json" format
            
            If --output-path is not specified, the report will be printed to stdout.
            
            This internally calls `llvm-cov export -format=text`. See
            <https://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-export> for more.

        --lcov
            Export coverage data in "lcov" format
            
            If --output-path is not specified, the report will be printed to stdout.
            
            This internally calls `llvm-cov export -format=lcov`. See
            <https://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-export> for more.

        --text
            Generate coverage report in “text” format
            
            If --output-path or --output-dir is not specified, the report will be printed to stdout.
            
            This internally calls `llvm-cov show -format=text`. See
            <https://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-show> for more.

        --html
            Generate coverage report in "html" format
            
            If --output-dir is not specified, the report will be generated in `target/llvm-cov/html`
            directory.
            
            This internally calls `llvm-cov show -format=html`. See
            <https://llvm.org/docs/CommandGuide/llvm-cov.html#llvm-cov-show> for more.

        --open
            Generate coverage reports in "html" format and open them in a browser after the
            operation.
            
            See --html for more.

        --summary-only
            Export only summary information for each file in the coverage data
            
            This flag can only be used together with either --json or --lcov.

        --output-path <PATH>
            Specify a file to write coverage data into.
            
            This flag can only be used together with --json, --lcov, or --text. See --output-dir for
            --html and --open.

        --output-dir <DIRECTORY>
            Specify a directory to write coverage report into (default to `target/llvm-cov`).
            
            This flag can only be used together with --text, --html, or --open. See also --output-
            path.

        --ignore-filename-regex <PATTERN>
            Skip source code files with file paths that match the given regular expression

        --no-report
            Run tests, but don't generate coverage report

    -q, --quiet
            No output printed to stdout

        --bin <NAME>...
            Name of the bin target to run

        --example <NAME>...
            Name of the example target to run

    -p, --package <SPEC>
            Package with the target to run

    -j, --jobs <N>
            Number of parallel jobs, defaults to # of CPUs

        --release
            Build artifacts in release mode, with optimizations

        --profile <PROFILE-NAME>
            Build artifacts with the specified profile

        --features <FEATURES>...
            Space or comma separated list of features to activate

        --all-features
            Activate all available features

        --no-default-features
            Do not activate the `default` feature

        --target <TRIPLE>
            Build for the target triple
            
            When this option is used, coverage for proc-macro and build script will not be displayed
            because cargo does not pass RUSTFLAGS to them.

    -v, --verbose
            Use verbose output
            
            Use -vv (-vvv) to propagate verbosity to cargo.

        --color <WHEN>
            Coloring [possible values: auto, always, never]

        --manifest-path <PATH>
            Path to Cargo.toml

        --frozen
            Require Cargo.lock and cache are up to date

        --locked
            Require Cargo.lock is up to date

        --offline
            Run without accessing the network

    -Z <FLAG>...
            Unstable (nightly-only) flags to Cargo

    -h, --help
            Print help information

[taiki-e]

bors r+

[bors]

Build succeeded:

• ci