feat: Added Google PSE as an alternative web search provider (#65)

* Added Google PSE as an alternative web search tool

* Removed unecessary comments

* chore(ConfigManager): moved Google PSE input next to API key

---------

Co-authored-by: AnotiaWang <anotia0202@gmail.com>

i18n/en.json

@@ -49,6 +49,14 @@
         },
         "firecrawl": {
           "help": "Get one API key at {0} if you are using the official service."
+        },
+        "google-pse": {
+          "title": "Google PSE",
+          "help": "Uses Google Programmable Search Engine. Requires an API Key and a PSE ID from Google Cloud Console / PSE Console. Find details at {0}.",
+          "apiKeyLabel": "Google API Key",
+          "apiKeyPlaceholder": "Enter your Google API Key",
+          "pseIdLabel": "Programmable Search Engine ID (cx)",
+          "pseIdPlaceholder": "Enter your PSE ID (cx value)"
         }
       },
       "concurrencyLimitHelp": "Limit the concurrent search tasks. This is useful to avoid overloading the search provider and causing requests to fail.",

i18n/nl.json

@@ -49,6 +49,14 @@
         },
         "firecrawl": {
           "help": "Ontvang een API-sleutel bij {0} als u de officiële service gebruikt."
+        },
+        "google-pse": {
+          "title": "Google PSE",
+          "help": "Gebruikt Google Programmable Search Engine. Vereist een API-sleutel en een PSE-ID van Google Cloud Console / PSE Console. Vind details op {0}.",
+          "apiKeyLabel": "Google API-sleutel",
+          "apiKeyPlaceholder": "Voer uw Google API-sleutel in",
+          "pseIdLabel": "Programmable Search Engine ID (cx)",
+          "pseIdPlaceholder": "Voer uw PSE ID (cx-waarde) in"
         }
       },
       "concurrencyLimitHelp": "Beperk de gelijktijdige zoektaken. Dit is handig om te voorkomen dat de zoekmachine overbelast raakt en verzoeken mislukken.",

i18n/zh.json

@@ -49,6 +49,14 @@
           "searchTopic": "搜索领域",
           "advancedSearch": "高质量搜索",
           "searchTopicHelp": "搜索特定领域的信息，获得更精确的结果。默认为“通用” (general)。"
+        },
+        "google-pse": {
+          "title": "Google PSE",
+          "help": "使用 Google 可编程搜索引擎。需要来自 Google Cloud Console / PSE Console 的 API 密钥和 PSE ID。在 {0} 查看详情。",
+          "apiKeyLabel": "Google API 密钥",
+          "apiKeyPlaceholder": "输入你的 Google API 密钥",
+          "pseIdLabel": "可编程搜索引擎 ID (cx)",
+          "pseIdPlaceholder": "输入你的 PSE ID (cx 值)"
         }
       },
       "concurrencyLimit": "并发数",