Search from Popup or ContextMenu

# Search from Popup or ContextMenu (SPC)

This WebExtension is a *fork* of "Swift Selection Search (SSS)".
This is a customized version of SSS for my own use.

When you select text or image on a webpage, you can quickly search from the popup or contextmenu.

By default, popup appears when you drag an image, selected text, or link, but you can choose from the following behaviors.
"Popup/icons behaviour" -> "Opening behaviour":
(Off / Auto / Hold Alt / Keyboard-only / Middle mouse button / Click / Drag)

There are Firefox and Microsoft Edge versions.
Microsoft Edge version also works with Chromium-based browsers such as Google Chrome, but there's no technical support.

## Install
* Firefox
* Microsoft Edge
* Other Chromium-based browsers such as Google Chrome

## Privacy policy

• Search query are **not saved**.
• You can use suggest(Google or DuckDuckGo or Qwant or Bing or Яндекс(Yandex) or 百度(Baidu)) in the popup search box or omnibox search, but you can disable it in the settings.
  "Popup/icons behaviour" -> "Enable search box suggest"
• If you set your favicon to data: scheme and disable suggest, this extension will not access the network at all.
  • exception
    • If you add a search engine from the context menu or options page, cache the favicon as data: scheme.
    • When adding a search engine from the context menu, if the normal addition is not possible, get OpenSearch if the site supports it.
    • Processes performed by the browser (update and synchronization).

## Different

• Fork Changes (Based on SSS Version 3.33.0):
  • Now works with Chromium-based browsers such as Microsoft Edge and Google Chrome.
  • Now works on mobile browsers.
  • The site's Content Security Policy(CSP) does not change.
    (Original Extension(SSS) rewrites CSP to "unsafe-inline" after Ver.3.40.0)
  • You can search on multiple search engines at once.
  • support POST Method search engine.
  • support search engine folder management.
  • added highlighting and auto-scrolling features.
  • added the ability to highlight even if not via this add-on.
  • added function to launch external applications (other browsers, yt-dlp, etc.).
  • added Popup Style ("Icon only" / "Icon and Name" / "Name only").
    (At "Icon only", the display mode can be temporarily switched by double-clicking)
  • support Bookmarklet. You can use Bookmarklet APIs.
    (It can also be executed automatically when the popup is displayed) / (You can also import bookmarklets from your Bookmarks)
  • added Search box to Popup.
  • added omnibox search.
  • support suggestions from Google or DuckDuckGo or Qwant or Bing or Яндекс(Yandex) or 百度(Baidu) in the popup search box or omnibox search.
  • added Hotkey search.
  • added a function to easily add a search engine from the text box context menu.
  • added search URL {linkurl}. {linkurl} is supports "Advanced usage".
    (Used when you want to search by link URI. You can do the same by holding down the Ctrl key when searching from the context menu)
  • If no text is selected, the Clipboard Text is searched.
  • Context menu display options.
  • You can also search by link text or image URL.
  • added Popup Opening behaviour "click" / "drag"
  • added "Popup/icons behaviour" -> "Right mouse button click" / "Right mouse button Long-click" / "Left mouse button Long-click"
  • added "Context menu" -> "Middle mouse button click" / "Right mouse button click"
  • added Open in Window ("reuse new window" / "reuse new background window" / "new incognito (private) window" …