feat(privileges): add privilege management for admin mods

Implement privilege registration and access checking for SAM, ULX, and FAdmin admin mods.

Provides:
- Registration of bladw_warn privilege with supported admin mods
- BladW.Warn.HasAccess() function to check player permissions
- Fallback to IsAdmin() if no admin mod is detected

lua/bladw_warn/server/sv_privileges.lua

@@ -0,0 +1,40 @@
+BladW = BladW or {}
+BladW.Warn = BladW.Warn or {}
+
+-- le droit géré par l'admin mod (SAM / ULX / FAdmin)
+local PRIV = "bladw_warn"
+BladW.Warn.Privilege = PRIV
+
+-- enregistre le droit dans l'admin mod présent
+local function Register()
+    if sam and sam.permissions and sam.permissions.add then
+        pcall(sam.permissions.add, PRIV, "BladW Warn", "admin")
+    end
+    if ULib and ULib.ucl and ULib.ucl.registerAccess then
+        pcall(ULib.ucl.registerAccess, PRIV, "admin", "Gérer les warns BladW", "BladW")
+    end
+    if FAdmin and FAdmin.Access and FAdmin.Access.AddPrivilege then
+        pcall(FAdmin.Access.AddPrivilege, PRIV, 2)
+    end
+end
+
+hook.Add("SAM.LoadPermissions", "BladW:WarnPriv", Register)
+hook.Add("InitPostEntity", "BladW:WarnPriv", Register)
+Register()
+
+-- ce joueur peut-il gérer les warns ?
+function BladW.Warn.HasAccess(ply)
+    if not IsValid(ply) then return false end
+
+    if sam and sam.player and sam.player.has_permission then
+        return sam.player.has_permission(ply, PRIV)
+    end
+    if ULib and ULib.ucl and ULib.ucl.query then
+        return ULib.ucl.query(ply, PRIV)
+    end
+    if FAdmin and FAdmin.Access and FAdmin.Access.PlayerHasPrivilege then
+        return FAdmin.Access.PlayerHasPrivilege(ply, PRIV)
+    end
+
+    return ply:IsAdmin()
+end