Printing: Add TemplateLayout class

This is the main class to hold Grantlee engine logic.
TemplateLayout::generate() loads QT5Grantlee and initialize the
templates then returns a QString that contains the rendered HTML by
Grantlee library.

Also this class contains the Dive class which holds the logic that
formats the data before passing it to the templates.

Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

CMakeLists.txt

@@ -260,6 +260,7 @@ set(SUBSURFACE_CORE_LIB_SRCS
 	configuredivecomputer.cpp
 	configuredivecomputerthreads.cpp
 	divesitehelpers.cpp
+	templatelayout.cpp
 	${PLATFORM_SRC}
 )
 source_group("Subsurface Core" FILES ${SUBSURFACE_CORE_LIB_SRCS})