scripts: move gen_image_info.py to scripts/build

Move scripts needed by the build system and not designed to be run
individually or standalone into the build subfolder.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

CMakeLists.txt

@@ -1705,7 +1705,7 @@ endif()
 if(CONFIG_BUILD_OUTPUT_INFO_HEADER)
   list(APPEND
     post_build_commands
-    COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/gen_image_info.py
+    COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/build/gen_image_info.py
     --elf-file=${KERNEL_ELF_NAME}
     --header-file=${PROJECT_BINARY_DIR}/include/public/zephyr_image_info.h
     $<$<BOOL:${adjustment}>:--adjusted-lma=${adjustment}>

CODEOWNERS

@@ -694,7 +694,7 @@
 /scripts/pylib/twister/expr_parser.py     @nashif
 /scripts/schemas/twister/                 @nashif
 /scripts/build/gen_app_partitions.py            @dcpleung @nashif
-scripts/gen_image_info.py                 @tejlmand
+scripts/build/gen_image_info.py           @tejlmand
 /scripts/get_maintainer.py                @nashif
 /scripts/dts/                             @mbolivar-nordic @galak
 /scripts/release/                         @nashif