Lua: Add Utils.pid

Change-Id: I2f598639b0ebc77216e0286b59445e91967fabe0
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/lua/bindings/utils.cpp

@@ -81,6 +81,8 @@ void addUtilsModule()
 
             utils["waitms"] = wrap(utils["waitms_cb"]);
 
+            utils["pid"] = QCoreApplication::applicationPid();
+
             auto hostOsInfoType = utils.new_usertype<HostOsInfo>("HostOsInfo");
             hostOsInfoType["isWindowsHost"] = &HostOsInfo::isWindowsHost;
             hostOsInfoType["isMacHost"] = &HostOsInfo::isMacHost;

src/plugins/lua/meta/utils.lua

@@ -2,6 +2,9 @@
 
 local utils = {}
 
+---The Process ID of Qt Creator.
+utils.pid = 0
+
 ---Suspends the current coroutine for the given amount of milliseconds. Call `a.wait` on the returned value to get the result.
 ---@param ms number The amount of milliseconds to wait.
 function utils.waitms(ms) end