style: configure deno fmt to use single quotes

- Add singleQuote: true to deno.json fmt configuration
- Reformat all files with single quotes using deno fmt

ts/snmp/types.ts

@@ -2,7 +2,7 @@
  * Type definitions for SNMP module
  */
 
-import { Buffer } from "node:buffer";
+import { Buffer } from 'node:buffer';
 
 /**
  * UPS status interface
@@ -49,11 +49,11 @@ export interface ISnmpConfig {
   timeout: number;
 
   context?: string;
-  
+
   // SNMPv1/v2c
   /** Community string for SNMPv1/v2c */
   community?: string;
-  
+
   // SNMPv3
   /** Security level for SNMPv3 */
   securityLevel?: 'noAuthNoPriv' | 'authNoPriv' | 'authPriv';
@@ -67,7 +67,7 @@ export interface ISnmpConfig {
   privProtocol?: 'DES' | 'AES';
   /** Privacy key for SNMPv3 */
   privKey?: string;
-  
+
   // UPS model and custom OIDs
   /** UPS model for OID selection */
   upsModel?: TUpsModel;
@@ -91,4 +91,4 @@ export interface ISnmpV3SecurityParams {
   msgAuthenticationParameters: Buffer;
   /** Privacy parameters */
   msgPrivacyParameters: Buffer;
-}
+}