armbian-next: artifacts: introduce kernel/u-boot artifacts; git ref2info; "memoizer"; some hashing

- artifacts: u-boot/kernel - pt7 - adapt legacy/artifact versions; use common `capture_rename_legacy_debs_into_artifacts()`
- artifacts: u-boot - pt6: add artifact for u-boot
  - use artifact version / reason in actual u-boot .deb if present
- artifacts: kernel - pt5: tune kernel version, refactor
- artifacts: kernel - pt4: squash unrelated bugs that show up; move `prepare_compilation_vars()` to default build
- artifacts: kernel - pt3: drivers+patches+.config hashing
  - split file hashing function from drivers-harness; fix it so filenames are relative and sorted; sort from ${SRC}, always
  - aplit prepare_kernel_config_core_or_userpatches() from `kernel_config_initialize()`
- artifacts: kernel - pt2:  memoizing git ref2info
- artifacts: kernel - pt1:  versioning

lib/functions/cli/commands.sh

@@ -27,11 +27,15 @@ function armbian_register_commands() {
 
 		# shortcuts, see vars set below. the use legacy single build, and try to control it via variables
 		["kernel"]="standard_build"
+		["kernel-config"]="standard_build"
 		["u-boot"]="standard_build"
 		["uboot"]="standard_build"
 
 		# external tooling, made easy.
 		["oras-upload"]="oras" # implemented in cli_oras_pre_run and cli_oras_run; up/down/info are the same, see vars below
+		
+		# all-around artifact wrapper
+		["artifact"]="artifact" # implemented in cli_artifact_pre_run and cli_artifact_run
 
 		["undecided"]="undecided" # implemented in cli_undecided_pre_run and cli_undecided_run - relaunches either build or docker
 	)
@@ -48,6 +52,7 @@ function armbian_register_commands() {
 		["config-dump"]="CONFIG_DEFS_ONLY='yes'"
 		["configdump"]="CONFIG_DEFS_ONLY='yes'"
 
+		["kernel-config"]="KERNEL_ONLY='yes' JUST_KERNEL='yes' KERNEL_IGNORE_DEB='yes' KERNEL_CONFIGURE='yes'"
 		["kernel"]="KERNEL_ONLY='yes' JUST_KERNEL='yes' KERNEL_IGNORE_DEB='yes' KERNEL_CONFIGURE='no'"
 		["u-boot"]="KERNEL_ONLY='yes' JUST_UBOOT='yes' UBOOT_IGNORE_DEB='yes'"
 		["uboot"]="KERNEL_ONLY='yes' JUST_UBOOT='yes' UBOOT_IGNORE_DEB='yes'"