fix: rebase onto main, add IRC wire handlers and integration tests for Tier 3 commands

Rebase onto main to resolve conflicts from module path rename
(sneak.berlin/go/neoirc) and integration test addition.

- Update import paths in utility.go to new module path
- Add IRC wire protocol handlers for VERSION, ADMIN, INFO,
  TIME, KILL, and WALLOPS to ircserver/commands.go
- Register all 6 new commands in the IRC command dispatch map
- Implement proper user MODE +w/-w support for WALLOPS
- Add WALLOPS relay delivery in relay.go
- Add integration tests for all 7 Tier 3 commands:
  USERHOST, VERSION, ADMIN, INFO, TIME, KILL, WALLOPS
- Add newTestEnvWithOper helper for oper-dependent tests

internal/handlers/utility.go

@@ -8,8 +8,8 @@ import (
 	"strings"
 	"time"
 
-	"git.eeqj.de/sneak/neoirc/internal/db"
-	"git.eeqj.de/sneak/neoirc/pkg/irc"
+	"sneak.berlin/go/neoirc/internal/db"
+	"sneak.berlin/go/neoirc/pkg/irc"
 )
 
 // maxUserhostNicks is the maximum number of nicks allowed