* Use ninja build tool and compile blockchain-explorer
Ninja builds TON much faster;
* Use clang instead of gcc
* remove blockchain-explorer
since target not found on github action
* move ccpcheck to other gitaction
* run nativelib-java only against wallets branch for now
* rename gitaction
* Update windows2019x64-tonlib-java.yml
* Update windows2019x64-tonlib-java.yml
* Update macos-10.15-tonlib-java.yml
* Update windows2019x64-tonlib-java.yml
* Update windows2019x64-tonlib-java.yml
