Add support for Gateway-Api HTTPRoutes and TCPRoutes

[FernandoRoldan93]

Adding support for HTTPRoutes and TCPRoutes, enabling the use of SFTPGo in clusters that use Gateway API compatible ingress controllers. Close #56

[CLAassistant]

All committers have signed the CLA.

[drakkan]

Hi @FernandoRoldan93 , thanks for the PR.

I think a few adjustments are needed before we can merge:

• Since the chart also supports FTP and WebDAV, we should include a TCPRoute for FTP and an HTTPRoute for WebDAV to make the Gateway API implementation complete.
• The HTTPRoute templates reference a $backend variable (for weight, kind, etc.), but it is not defined or documented in values.yaml. It would be great to add an example (even commented out) so users know how to configure it.
• Since TCPRoute uses v1alpha2, we should add a quick note in values.yaml clarifying that experimental API are required for TCP routes.

I've merged/reimplemented several PRs between yesterday and today, but I need to switch to other tasks right now. Please let me know if you'd like to add the suggested additions. I'll get back to reviewing the PRs on this repository as soon as I have another time slot available. Thanks in advance.

[FernandoRoldan93]

Hello! I've just added the changes you suggested. Let me know if you find something else to change. Thanks!

[varac]

Any chance to get this merged soon ? The ingress-nginx EOL (end of this month) is approaching.