storcon: use https for pageservers (#10759)

## Problem

Storage controller uses unsecure http for pageserver API.

Closes: https://github.com/neondatabase/cloud/issues/23734
Closes: https://github.com/neondatabase/cloud/issues/24091

## Summary of changes

- Add an optional `listen_https_port` field to storage controller's Node
state and its API (RegisterNode/ListNodes/etc).
- Allow updating `listen_https_port` on node registration to gradually
add https port for all nodes.
- Add `use_https_pageserver_api` CLI option to storage controller to
enable https.
- Pageserver doesn't support https for now and always reports
`https_port=None`. This will be addressed in follow-up PR.

storage_controller/src/schema.rs

@@ -26,6 +26,7 @@ diesel::table! {
         listen_pg_addr -> Varchar,
         listen_pg_port -> Int4,
         availability_zone_id -> Varchar,
+        listen_https_port -> Nullable<Int4>,
     }
 }