Merge branch 'ps/setup-centralize-odb-creation'

The setup logic to discover and configure repositories has been refactored, and the initialization of the object database has been centralized. * ps/setup-centralize-odb-creation: setup: construct object database in `apply_repository_format()` repository: stop reading loose object map twice on repo init setup: stop initializing object database without repository setup: stop creating the object database in `setup_git_env()` repository: stop initializing the object database in `repo_set_gitdir()` setup: deduplicate logic to apply repository format setup: drop `setup_git_env()` t0001: plug test gaps for git-init(1) with GIT_OBJECT_DIRECTORY