Add Advanced Docking System library

This library is a fork of the following repository
https://github.com/githubuser0xFFFF/Qt-Advanced-Docking-System
Development started from the following commit
1de42a9766134eecd2611c2b4e209d3e0ede74d2
Incorporate all commits until
3ffbbfb6d01ff211d8349027221a19b1419296b5

 - Rename variables and files to follow the Qt style guide
 - General code cleanup (remove goto, fix typos, add overrides, remove
   explicit slots specifier, replace string-based with functor-based
   connections, replace dynamic_cast with qobject_cast)
 - Replace most preprocessor instructions Q_OS_LINUX/Q_OS_MACOS with
   Utils::HostOsInfo
 - Remove all QT_VERSION preprocessor instructions below 5.11
 - Change loading and storage of workspaces. Store workspaces in
   separate file instead of a list in the Settings.ini
 - Add workspace dialog, model and view for managing workspaces
 - Rename XML tags and use enum/bool instead of ascii art/numbers as
   attribute values. Use base64 instead of hex for storing geometry info
 - Remove internal style sheets
 - Add more build systems (qmake, qbs)
 - Adapt copyright header
 - Remove unix specific build rules
 - Replace ADS_PRINT with QLoggingCategory
 - Replace Java-style with STL-style iterators

Change-Id: Icf8c2fbaccec9680df83c6e2100e3446a090a437
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/libs/libs.pro b/src/libs/libs.pro
index 550a6b0b97..40dce690eb 100644
--- a/src/libs/libs.pro
+++ b/src/libs/libs.pro
@@ -3,6 +3,7 @@ include(../../qtcreator.pri)
 TEMPLATE  = subdirs
 
 SUBDIRS   += \
+    advanceddockingsystem \
     aggregation \
     extensionsystem \
     utils \