refactor: 合并 avdetect 到 systeminfo，修复杀软检测误报

- 将 avdetect 的进程匹配逻辑合并到 systeminfo 插件
- 修复进程匹配使用 Contains 导致大量误报，改为精确匹配
- 修正 auto.json 中 Microsoft Security Essentials 为 Microsoft Defender
- 使用 map 索引优化进程匹配性能
- 清理废弃的 envinfo/avdetect i18n key

plugins/local/auto.json

@@ -406,7 +406,7 @@
         ],
         "url": "https://www.mcafee.com/en-us"
     },
-    "Microsoft Security Essentials": {
+    "Microsoft Defender(Windows Defender)": {
         "processes": [
             "MsMpEng.exe",
             "msseces.exe",
@@ -421,7 +421,7 @@
             "MSASCuiL.exe",
             "SecurityHealthService.exe"
         ],
-        "url": "https://support.microsoft.com/en-us/help/17150/windows-7-what-is-microsoft-security-essentials"
+        "url": "https://www.microsoft.com/en-us/windows/comprehensive-security"
     },
     "NANO-Antivirus": {
         "processes": [