drm_hwcomposer: Move HwcDisplay out of DrmHwcTwo class

Reduces code complexity.

Closes: https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer/-/issues/35
Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
diff --git a/.ci/Makefile b/.ci/Makefile
index c85dd88..ebe534f 100644
--- a/.ci/Makefile
+++ b/.ci/Makefile
@@ -37,6 +37,8 @@
     drm/DrmProperty.cpp:COARSE                          \
     drm/UEventListener.cpp:COARSE                       \
     drm/VSyncWorker.cpp:COARSE                          \
+    hwc2_device/HwcDisplay.cpp:COARSE                   \
+    hwc2_device/HwcDisplay.h:COARSE                     \
     tests/worker_test.cpp:COARSE                        \
     utils/Worker.h:COARSE                               \
     utils/UniqueFd.h:FINE                               \