Lua: Move lua plugins into normal plugin folder

Change-Id: I14ab0bb755a4279bc255673596fe084cd556433c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

cmake/QtCreatorAPI.cmake

@@ -1129,7 +1129,7 @@ function (add_qtc_lua_plugin name)
 
   qtc_copy_to_builddir(${name}
     FILES ${_arg_SOURCES}
-    DESTINATION ${IDE_PLUGIN_PATH}/lua-plugins
+    DESTINATION ${IDE_PLUGIN_PATH}
   )
 
   if (NOT _arg_EXCLUDE_FROM_INSTALL)
@@ -1138,7 +1138,7 @@ function (add_qtc_lua_plugin name)
 
       install(
         FILES ${CMAKE_CURRENT_SOURCE_DIR}/${SOURCE}
-        DESTINATION ${IDE_PLUGIN_PATH}/lua-plugins/${SOURCE_DIR}
+        DESTINATION ${IDE_PLUGIN_PATH}/${SOURCE_DIR}
       )
     endforeach()
   endif()

qbs/imports/QtcLuaPlugin.qbs

@@ -7,6 +7,6 @@ Product {
         prefix: sourceDirectory + '/' + product.name + '/'
         files: luafiles
         qbs.install: true
-        qbs.installDir: qtc.ide_plugin_path + '/lua-plugins/' + product.name
+        qbs.installDir: qtc.ide_plugin_path + '/' + product.name
     }
 }

src/plugins/lua/README.md

@@ -6,7 +6,7 @@ The Lua plugin provides support for writing plugins using the Lua scripting lang
 
 ## Usage
 
-The plugin scans the folder `lua-plugins` folder inside the normal plugin folder of Qt Creator
+The plugin scans the normal plugin folders of Qt Creator
 `ExtensionSystem::PluginManager::pluginPaths()`. It loads scripts from any folder that contains
 a .lua script named the same as the folder.
 Whether or not the script is enabled is determined by the `disabledByDefault` field in the plugin
@@ -17,7 +17,7 @@ table and the settings configured via the "About Plugins" dialog in Qt Creator.
 A Lua script needs to provide the following table to be considered a plugin:
 
 ```lua
--- lua-plugins/myluaplugin/myluaplugin.lua
+-- myluaplugin/myluaplugin.lua
 return {
     name = "MyLuaPlugin",
     version = "1.0.0",
@@ -50,13 +50,13 @@ It must only return the plugin specification table and not execute or require an
 Use `require` to load other files from within the setup function.
 
 ```lua
--- lua-plugins/myluaplugin/myluaplugin.lua
+-- myluaplugin/myluaplugin.lua
 return {
     -- ... required fields omitted ..
     setup = function() require 'init'.setup() end,
 } --[[@as QtcPlugin]]
 
--- lua-plugins/myluaplugin/init.lua
+-- myluaplugin/init.lua
 local function setup()
     print("Hello from Lua!")
 end

src/plugins/lua/luaplugin.cpp

@@ -106,10 +106,7 @@ public:
 
     bool delayedInitialize() final
     {
-        scanForPlugins(transform(PluginManager::pluginPaths(), [](const FilePath &path) {
-            return path / "lua-plugins";
-        }));
-
+        scanForPlugins(PluginManager::pluginPaths());
         return true;
     }