Meta: Support -DCMAKE_BUILD_TYPE=DEBUG for Lagom builds

It's exhausting to have to do a full rebuild when stashing/unstashing
these changes locally.

Meta/CMake/lagom_compile_options.cmake

@@ -3,13 +3,19 @@ include(${CMAKE_CURRENT_LIST_DIR}/common_compile_options.cmake)
 add_compile_options(-Wno-maybe-uninitialized)
 add_compile_options(-Wno-shorten-64-to-32)
 add_compile_options(-fsigned-char)
-add_compile_options(-g1)
 add_compile_options(-ggnu-pubnames)
-add_compile_options(-O2)
 if (NOT WIN32)
     add_compile_options(-fPIC)
 endif()
 
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+    add_compile_options(-ggdb3)
+    add_compile_options(-Og)
+else()
+    add_compile_options(-O2)
+    add_compile_options(-g1)
+endif()
+
 function(add_linker_flag_if_supported flag)
     include(CheckLinkerFlag)