fixed compilation command for cpp files (#145)

* Added CheckLibraryVersion class for check library version

* Fixed CheckLibraryVersion class

* deleted non-usable dependencies

* Fixed exception

* Fixed exception

* Fixed exception/omit catch block

* improvement for CheckLibraryVersion

* added cpp executor and cpp searcher (#143)

* added cpp executor and cpp searcher

* improved regular expression for cpp_searcher.java

* Update CppExecutor.java

reformat compilation command

* Update CppExecutor.java

fixed compilation Command

src/main/java/org/hyperskill/hstest/testing/execution/process/CppExecutor.java

@@ -42,7 +42,7 @@ public CppExecutor(String sourceName) {
 
     @Override
     protected List<String> compilationCommand() {
-        return List.of("g++", "-std", "c++20", "-pipe", "-O2", "-static", "-o", filename, runnable.getFile().getName());
+        return List.of("g++", "-std=c++20", "-pipe", "-O2", "-static", "-o", filename, runnable.getFile().getName());
     }
 
     @Override