[common-chart images] Add images currently used within common to containerforge

[alfi0812]

Currently there are 6 Images within common-library which are no longer beeing updated and should be moved to containerforge:

• Gluetun
• Netshoot
• Tailscale

[PrivatePuffin]

@alfi0812 Alpine is not going to be added, as discussed earlier its replaced by ubuntu and due to be removed completely in common 2026.
See common 2026 PR.

[PrivatePuffin]

OpenVPN support is going to always be through gluetun, so seperate image is getting nuked

[PrivatePuffin]

Wireguard was also unused so removed from the list

[alfi0812]

Updated the post and removed the uneeded ones