feat: PXE setup now fully functional for inventory agent

The process will setup DHCP dnsmasq on opnsense to boot the correct ipxe file depending on the architecture
Then ipxe will chainload to either a mac-specific ipxe boot file or the fallback inventory boot file
Then a kickstart pre script will setup the cluster ssh key to allow ssh connections to the machine and also setup and start harmony_inventory_agent to allow being scraped

Note: there is a bug with the inventory agent currently, it cannot find lsmod on centos stream 9, will fix this soon

data/pxe/okd/http_files/.gitattributes

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+harmony_inventory_agent filter=lfs diff=lfs merge=lfs -text
+os filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9 filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/images filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/initrd.img filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/vmlinuz filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/images/efiboot.img filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/images/install.img filter=lfs diff=lfs merge=lfs -text
+os/centos-stream-9/images/pxeboot filter=lfs diff=lfs merge=lfs -text

data/pxe/okd/http_files/cluster_ssh_key.pub

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+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBx6bDylvC68cVpjKfEFtLQJ/dOFi6PVS2vsIOqPDJIc jeangab@liliane2