Quickly switch between customized search engines; Add a custom search engine in the right-click menu.
It supports configuring any search engine, similar to the search engine configuration in chrome settings, such as Baidu search, Bing search, JD search, Douban search, headline search, etc.
After configuration, support:
1. shortcut keys switch between search engines.
For example, on the Baidu search page, press the shortcut key (configurable) to quickly switch to Google search without reentering the search term, and then press the shortcut key to quickly switch to Bing search.
2. click the plug-in pop-up menu in the upper right corner (shortcut keys can also be configured) to quickly switch to the specified search engine.
If it is on the search engine page, it will automatically bring the search term and jump to the specified search result page; Otherwise, directly jump to the specified search results page.
3. support the configuration of search engines in the right-click menu.
If only one search engine is configured, it is in the top-level menu, or multiple search engines can be configured. After selecting a text, right-click it, and "search for" selected text "using XX" will appear in the right-click menu
功能：
支持配置任意搜索引擎，类似chrome设置里面的搜索引擎配置，比如百度搜索、必应搜索、京东搜索、豆瓣搜索、头条搜索等等。
配置好后，支持：
1. 快捷键在搜索引擎间切换。比如在百度搜索页面，按下快捷键（可自己配置）快速切换为Google搜索，而无需重新输入检索词，再按下快捷键，快速切换为必应搜索。
2. 支持右上角点击插件弹出菜单（也可以配置快捷键），快速切换到指定搜索引擎。如果在搜索引擎页面，会自动带上检索词跳转到指定的搜索结果页；否则直接跳转到指定的搜索结果页面。
3. 支持配置右键菜单中的搜索引擎，如果只配置一个，则处于顶级菜单，也可以配置多个。选中文本后，点击右键，则右键菜单中出现『使用xx搜索"选中的文本"』
