Build Qt with gtk integration

Telegram/build/docker/centos_env/Dockerfile

@@ -635,7 +635,6 @@ RUN echo './configure -prefix '$'\"''$QT_PREFIX'$'\"'' \
 	-qt-harfbuzz \
 	-qt-pcre \
 	-no-icu \
-	-no-gtk \
 	-no-feature-xcb-sm \
 	-no-feature-wayland-server \
 	-static \

snap/snapcraft.yaml

@@ -302,6 +302,7 @@ parts:
       - libfreetype-dev
       - libgl-dev
       - libglib2.0-dev
+      - libgtk-3-dev
       - libharfbuzz-dev
       - libicu-dev
       - libpcre2-dev
@@ -337,6 +338,7 @@ parts:
       - libfreetype6
       - libgl1
       - libglib2.0-0
+      - libgtk-3-0
       - libharfbuzz0b
       - libicu66
       - libpcre2-16-0
@@ -397,7 +399,6 @@ parts:
         -release \
         -opensource \
         -confirm-license \
-        -no-gtk \
         -no-feature-xcb-sm \
         -no-feature-xcomposite-egl \
         -no-feature-xcomposite-glx \