NM-254: add bulk delete apis, rm old acl code (#3937)

* NM-254: add bulk delete apis for users, hosts, nodes and optimise postgres connection settings

* NM-254: rm debug logs

* NM-254: add bulk delete apis, remove old acl code

* NM-254: rm unused flag

* NM-254: fix bulk delete bugs, add security and performance improvements

- Fix host delete notifying peers before confirming deletion from DB
- Fix self-delete vulnerability in bulk user delete
- Fix DissasociateNodeFromHost failing when host.Nodes is empty
- Fix AssociateNodeToHost/DissasociateNodeFromHost stale read race
- Hoist GetAllExtClients outside loop in bulk user delete/status
- Move initializeUUID outside master-pod guard for HA correctness

* NM-254: return 202 Accepted for async bulk APIs, fix relay allowedIPs and host association error handling

- Change all bulk endpoints (hosts, nodes, users, ext clients) from
  200 OK to 202 Accepted to correctly signal async processing
- Add ReturnAcceptedResponse helper in logic/errors.go
- Fix GetAllowedIpsForRelayed returning empty allowedIPs slice,
  restoring relay connectivity
- Make AssociateNodeToHost and DissasociateNodeFromHost return an
  error when the host DB re-fetch fails instead of silently using
  stale data
- Add bulk-apis.md documenting all five bulk endpoints

* NM-254: rm coredns container

* NM-254: add bulk apis for node,extclient status, add activity logs to bulk apis

* NM-254: add bulk api for connection toggle

* NM-254: add network check

* Update controllers/hosts.go

Co-authored-by: tenki-reviewer[bot] <262613592+tenki-reviewer[bot]@users.noreply.github.com>

* NM-254: optimise bulk extclient deletion

---------

Co-authored-by: tenki-reviewer[bot] <262613592+tenki-reviewer[bot]@users.noreply.github.com>

compose/docker-compose.yml

@@ -53,18 +53,6 @@ services:
       - "80:80/tcp"
       - "443:443/tcp"
       - "50051:50051"
-
-  coredns:
-    #network_mode: host
-    container_name: coredns
-    image: coredns/coredns:1.10.1
-    command: -conf /root/dnsconfig/Corefile
-    env_file: ./netmaker.env
-    restart: always
-    depends_on:
-      - netmaker
-    volumes:
-      - dnsconfig:/root/dnsconfig
   mq:
     container_name: mq
     image: eclipse-mosquitto:2.0.15-openssl