Removed the legacy .devops/cloud-v-pipeline Jenkins CI configuration and introduced .github/workflows/build-riscv-native.yml for native RISC-V builds using GitHub Actions.
* removed trailing whitespaces
* Added the trigger at PR creation
* Corrected OS name
* Added ccache as setup package
* Added ccache for self-hosted runner
* Added directory for ccache size storage
Co-authored-by: Sigbjørn Skjæret <redacted>
* Changed the build command and added ccache debug log