debugger: add gdb.pri

src/plugins/debugger/gdb/gdb.pri

+HEADERS += \
+    $$PWD/gdbmi.h \
+    $$PWD/gdbengine.h \
+    $$PWD/gdboptionspage.h \
+
+SOURCES += \
+    $$PWD/gdbmi.cpp \
+    $$PWD/gdbengine.cpp \
+    $$PWD/gdboptionspage.cpp \
+
+FORMS +=  $$PWD/gdboptionspage.ui
+
+RESOURCES += $$PWD/gdb.qrc