`TLSRoute` promotion to standard

[mlavacca]

What would you like to be added:

This is an umbrella issue that gathers all the issues that need to be addressed in order to promote TLSRoute to standard.

As an additional and potentially useful resource, the following is the original google docs on the Gateway API TLS use cases: https://docs.google.com/document/d/17sctu2uMJtHmJTGtBi_awGB0YzoCLodtR6rUNmKMCs8/edit#heading=h.cxuq8vo8pcxm

### API improvement
- [ ] https://github.com/kubernetes-sigs/gateway-api/issues/2111

### Documentation
- [ ] #2643
- [ ] #1474
- [ ] https://github.com/kubernetes-sigs/gateway-api/issues/623

### Conformance
- [ ] https://github.com/kubernetes-sigs/gateway-api/issues/1579
- [ ] https://github.com/kubernetes-sigs/gateway-api/issues/2153
- [ ] https://github.com/kubernetes-sigs/gateway-api/issues/3466

[candita]

@mlavacca we probably need to address #2263 as well. I think it was merged in error. cc @robscott @shaneutt @youngnick @kate-osborn

[k8s-triage-robot]

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[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues.

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[candita]

/remove-lifecycle rotten
/remove-lifecycle stale

We have been discussing this issue in community meetings, and I volunteered to open a Discussion, which will reference this issue.

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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You can:

• Mark this issue as fresh with /remove-lifecycle rotten
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/lifecycle rotten