close#42
1. Inject runner version when `make build`
After building, executing command line: `./act_runner -v` or `./act_runner --version`, the version of runner is printed.

2. In `Actions` UI:

3. Set request header in http client interceptor.
Co-authored-by: sillyguodong <[email protected]>
Reviewed-on: https://gitea.com/gitea/act_runner/pulls/43
Reviewed-by: delvh <[email protected]>
Reviewed-by: Jason Song <[email protected]>
Co-authored-by: sillyguodong <[email protected]>
Co-committed-by: sillyguodong <[email protected]>