doxygen: move device_driver under to components for pages

In line with the layout of the source code, the
Device-Driver submodule should belong to components.

The doxygen Module part has been adjusted. This commit
modifies the markdown document part and moves the
device-driver pages under to components.

Signed-off-by: Chen Wang <[email protected]>

Author: unicornx

documentation/6.components/INDEX.md

@@ -1,7 +1,8 @@
 @page page_components Components
 
-- @subpage page_component_finsh
 - @subpage page_component_vfs
+- @subpage page_device
+- @subpage page_component_finsh
 - @subpage page_component_utest
 - @subpage page_component_dlmodule
 - @subpage page_component_sal

documentation/5.device/INDEX.md renamed to documentation/6.components/device-driver/INDEX.md

@@ -1,4 +1,4 @@
-@page page_device Device
+@page page_device Device Driver
 
 - @subpage page_device_framework
 - @subpage page_device_pin