feat(frontend): add targetStrategy field to the outbound editor

Xray-core added a top-level targetStrategy to OutboundObject that
controls how the destination domain is resolved before dialing
(AsIs/UseIP*/ForceIP*, any protocol). The panel neither offered a
control for it nor preserved the key across the modal's JSON round
trip, so hand-written values were silently dropped on save.

The form now carries targetStrategy next to sendThrough as a select
of the 11 canonical values; the adapter normalizes wire values to
canonical case (the core matches case-insensitively) and omits the
key when unset. Freedom settings additionally read the new
settings-level targetStrategy with domainStrategy as fallback,
mirroring the core, while still emitting the legacy domainStrategy
key so configs keep working on older cores.

internal/web/translation/zh-TW.json

@@ -1549,6 +1549,7 @@
         "localIpPlaceholder": "本地 IP",
         "dialerProxyPlaceholder": "選擇要串接的出站",
         "dialerProxyHint": "讓此出站透過另一個出站（以標籤指定）連線，以建立代理鏈。留空則直接連線。",
+        "targetStrategyHint": "連線前如何解析目標網域：AsIs（預設）原樣傳送，UseIP… 解析失敗時回退，ForceIP… 必須解析成功。",
         "addressRequired": "地址為必填",
         "portRequired": "連接埠為必填",
         "optional": "選用",
@@ -1618,6 +1619,7 @@
         "accountInfo": "帳戶資訊",
         "outboundStatus": "出站狀態",
         "sendThrough": "傳送通過",
+        "targetStrategy": "目標解析策略",
         "test": "測試",
         "testResult": "測試結果",
         "testing": "正在測試連接...",