armbian-next: Python patching delusion, pt4: series & better markdown

- Python patching: hopefully better Markdown: split series dir; detect more status/problems; arche only for missing Subject
  - Python patching: archeology only for missing Subject:, not description; clarify CLI pushing
  - Python patching: use `{file_base_name}.patch` for archeology as `file_name` might include a dir
- Python patching: fix: don't skip board/target patches for no reason
- Python patching: fix for series.conf patches (sunxi/sunxi64): don't sort; mark as series and show on summary
- Python patching: don't fail if archeology found no commits (but add warning)
- Python patching: CLI command `kernel-patches-to-git` with archeology summary, and git pushing of results & summary
  - Python patching: patches-to-git small fixes, auto-push if it's rpardini
  - Python patching: add `patch-kernel` CLI command
- Python patching: commit README.md & gh-pages workflow when apply_patches_to_git
  - Python patching: hopefully better markdown
- Python patching: `git add` everything all at once, for speed

lib/functions/compilation/kernel.sh

@@ -36,6 +36,12 @@ function compile_kernel() {
 	local version hash pre_patch_version
 	kernel_main_patching
 
+	# Stop after patching;
+	if [[ "${PATCH_ONLY}" == yes ]]; then
+		display_alert "PATCH_ONLY is set, stopping." "PATCH_ONLY=yes and patching success" "cachehit"
+		return 0
+	fi
+
 	local toolchain
 	kernel_config_maybe_interactive
 
@@ -50,7 +56,7 @@ function compile_kernel() {
 
 	rm -f linux-firmware-image-*.deb # remove firmware image packages here - easier than patching ~40 packaging scripts at once
 	run_host_command_logged rsync --remove-source-files -r ./*.deb "${DEB_STORAGE}/"
-	
+
 	# kernel build worked; let's clean up the git-bundle cache, since the git-bare cache is proven working.
 	kernel_cleanup_bundle_artifacts