Core/Executables: Add --version and -v to worldserver and authserver arguments

Closes #14993

(cherry picked from commit 0f082e8f925f17e585fd221b901f55581d2d68ab)

Conflicts:
	src/server/bnetserver/Main.cpp

src/server/authserver/Main.cpp

@@ -79,8 +79,8 @@ int main(int argc, char** argv)
     std::string configFile = _TRINITY_REALM_CONFIG;
     std::string configService;
     auto vm = GetConsoleArguments(argc, argv, configFile, configService);
-    // exit if help is enabled
-    if (vm.count("help"))
+    // exit if help or version is enabled
+    if (vm.count("help") || vm.count("version"))
         return 0;
 
 #if PLATFORM == PLATFORM_WINDOWS
@@ -262,6 +262,7 @@ variables_map GetConsoleArguments(int argc, char** argv, std::string& configFile
     options_description all("Allowed options");
     all.add_options()
         ("help,h", "print usage message")
+        ("version,v", "print version build info")
         ("config,c", value<std::string>(&configFile)->default_value(_TRINITY_REALM_CONFIG), "use <arg> as configuration file")
         ;
 #if PLATFORM == PLATFORM_WINDOWS
@@ -287,6 +288,8 @@ variables_map GetConsoleArguments(int argc, char** argv, std::string& configFile
 
     if (variablesMap.count("help"))
         std::cout << all << "\n";
+    else if (variablesMap.count("version"))
+        std::cout << _FULLVERSION << "\n";
 
     return variablesMap;
 }