Integrate seco-base/kirkstone-gm_d18
Commit: https://git.seco.com/edgehog/seco-base/-/commit/9ee4dab517879b3eb7a900ffd9a340007e043370
[CONFIGS][D18] Add configuration files for Embedded and Things flavours
Commit: https://git.seco.com/edgehog/seco-base/-/commit/9ee4dab517879b3eb7a900ffd9a340007e043370
[CONFIGS][D18] Add configuration files for Embedded and Things flavours