Additional overlays to support provision-to-disk without ignition

- sfdisk - partitions the disk
- mkfs - formats partitions
- mkswap - formats partitions for swap
- systemd.mount - explicit creation of systemd mount units
- systemd.swap - explicit creation of systemd swap units

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

CHANGELOG.md

@@ -12,7 +12,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Added userdocs for `wwctl node import` from yaml/csv.
 - Added uid, gid, and permissions to OverlayFile in REST API. #1925
 - (preview) Support provisioning to local storage with `wwctl <node|partition> set --root=/path/to/disk`. #1894
-- (preview) Support disk provisioning during dracut boot stage with Ignition. #1894
+- (preview) Support disk provisioning during dracut boot stage with Ignition, sfdisk, mkfs, and mkswap. #1894
+- Support creating multiple symlinks from a single overlay template. #1894
+- Added systemd.mount and systemd.swap overlays. #1894
 - Support configuring Ignition with resources. #1894
 - Added `wwctl <node|partition> set --parttype`. #1894