feature: show and share user location

copyright OpenLayers v7.1.0: ol.css
copyright OpenLayers v7.1.0: ol.js

GitLab: #867

Change-Id: I4e01f6d9727d56541d1b44023f26959ebe4fbe26
Signed-off-by: Nicolas Vengeon <nicolas.vengeon@savoirfairelinux.com>

CMakeLists.txt

@@ -85,7 +85,8 @@ set(QT_MODULES
   Core
   Core5Compat
   Multimedia
-  Widgets)
+  Widgets
+  Positioning)
 
 if(NOT DEFINED WITH_WEBENGINE)
   set(WITH_WEBENGINE true)
@@ -96,7 +97,8 @@ if(WITH_WEBENGINE)
     WebEngineCore
     WebEngineQuick
     WebChannel
-    WebEngineWidgets)
+    WebEngineWidgets
+    )
 endif()
 
 set(CMAKE_CXX_FLAGS
@@ -176,6 +178,7 @@ set(COMMON_SOURCES
   ${APP_SRC_DIR}/utils.cpp
   ${APP_SRC_DIR}/mainapplication.cpp
   ${APP_SRC_DIR}/messagesadapter.cpp
+  ${APP_SRC_DIR}/positionmanager.cpp
   ${APP_SRC_DIR}/accountadapter.cpp
   ${APP_SRC_DIR}/calladapter.cpp
   ${APP_SRC_DIR}/conversationsadapter.cpp
@@ -211,7 +214,9 @@ set(COMMON_SOURCES
   ${APP_SRC_DIR}/videodevices.cpp
   ${APP_SRC_DIR}/videoprovider.cpp
   ${APP_SRC_DIR}/callparticipantsmodel.cpp
-  ${APP_SRC_DIR}/tipsmodel.cpp)
+  ${APP_SRC_DIR}/tipsmodel.cpp
+  ${APP_SRC_DIR}/positioning.cpp
+)
 
 set(COMMON_HEADERS
   ${APP_SRC_DIR}/avatarimageprovider.h
@@ -228,6 +233,7 @@ set(COMMON_HEADERS
   ${APP_SRC_DIR}/mainapplication.h
   ${APP_SRC_DIR}/qrimageprovider.h
   ${APP_SRC_DIR}/messagesadapter.h
+  ${APP_SRC_DIR}/positionmanager.h
   ${APP_SRC_DIR}/accountadapter.h
   ${APP_SRC_DIR}/calladapter.h
   ${APP_SRC_DIR}/conversationsadapter.h
@@ -267,7 +273,8 @@ set(COMMON_HEADERS
   ${APP_SRC_DIR}/videodevices.h
   ${APP_SRC_DIR}/videoprovider.h
   ${APP_SRC_DIR}/callparticipantsmodel.h
-  ${APP_SRC_DIR}/tipsmodel.h)
+  ${APP_SRC_DIR}/tipsmodel.h
+  ${APP_SRC_DIR}/positioning.h)
 
 if(WITH_WEBENGINE)
   list(APPEND COMMON_SOURCES