feat: archive package tree implementation (#153)

* store built packages in archive tree instead of repository

* write tests to support new changes

* implement atomic_move method, move files only with lock

* use generic packages tree for all repos

* lookup through archive packages before build

* add archive trigger

* add archive trigger

* regenerate docs

* gpg loader fix

* support requires repostory flag

* drop excess REQUIRES_REPOSITORY

* simplify symlionk creation

* remove generators

* fix sttyle

* add separate function for symlinks creation

* fix rebase

* add note about slicing

* smol refactoring of archive_tree class

* remove duplicate code

* fix typos

* few review fixes

* monor fixes and typos

* clean empty directories

* remove side effect from getter

* drop recursive remove

* ensure_exists now accepts only argument

* add package like guard to symlinks fix

* speedup archive_lookup processing by iterrupting cycle

* remove custom filelock

* fix naming

* remove remove flag from repo

* review fixes

* restore wrapper around filelock

* extract repository explorer to separate class

* docs update

* fix ide findings

package/share/ahriman/settings/ahriman.ini.d/00-housekeeping.ini

@@ -1,3 +1,7 @@
+[archive]
+; Keep amount of last built packages in archive. 0 means keep all packages
+keep_built_packages = 1
+
 [logs-rotation]
 ; Keep last build logs for each package
 keep_last_logs = 5

package/share/ahriman/settings/ahriman.ini.d/00-triggers.ini

@@ -1,5 +1,6 @@
 [build]
 ; List of well-known triggers. Used only for configuration purposes.
+triggers_known[] = ahriman.core.archive.ArchiveTrigger
 triggers_known[] = ahriman.core.distributed.WorkerLoaderTrigger
 triggers_known[] = ahriman.core.distributed.WorkerTrigger
 triggers_known[] = ahriman.core.support.KeyringTrigger