Merge bitcoin/bitcoin#28565: rpc: getaddrmaninfo followups

e6e444c06c refactor: add and use EnsureAnyAddrman in rpc (stratospher)
bf589a50a0 doc: add release notes for #27511 (stratospher)
3931e6abc3 rpc: `getaddrmaninfo` followups (stratospher)

Pull request description:

  - make `getaddrmaninfo` RPC public since it's not for development purposes only and regular users might find it useful. [#26988 (comment)](https://github.com/bitcoin/bitcoin/pull/26988#issuecomment-1738371584)
  - add missing `all_networks` key to RPC help. [#27511 (comment)](https://github.com/bitcoin/bitcoin/pull/27511#discussion_r1335084087)
  - fix clang format spacing
  - add and use `EnsureAddrman` in RPC code. [#27511 (comment)](https://github.com/bitcoin/bitcoin/pull/27511#discussion_r1331501491)

ACKs for top commit:
  0xB10C:
    Code Review re-ACK e6e444c06c
  theStack:
    Code-review ACK e6e444c06c
  pablomartin4btc:
    tested ACK e6e444c06c

Tree-SHA512: c14090d5c64ff15e92d252578de2437bb2ce2e1e431d6698580241a29190f0a3528ae5b013c0ddb76a9ae538507191295c37cab7fd93469941cadbde44587072

doc/release-notes/release-notes-27511.md

@@ -0,0 +1,6 @@
+New RPCs
+--------
+
+- A new RPC `getaddrmaninfo` has been added to view the distribution of addresses in the new and tried table of the
+  node's address manager across different networks(ipv4, ipv6, onion, i2p, cjdns). The RPC returns count of addresses
+  in new and tried table as well as their sum for all networks. (#27511)