Update code to version 2.2.0 (#1942440) (part 1/4)
    
    * Updated to ProxySQL 2.2.0
    * Add new bundled library (prometheus-cpp) - new dependency
    * Rework Patch1 - move execution to patch macro, add description
    
    This patch (libinjection patch) didn't changed in version 2.2.0 of proxysql.
    Only execution of it has been moved to main .spec file, so now it matches
    rest of the patches.
    
    Previously this patch was executed in debundled patch, like this:
    
    cd libinjection && tar -zxf libinjection-3.10.0.tar.gz
    cd libinjection/libinjection && patch -p1 < ../../../../../SOURCES/libinjection_python2_to_3.patch