fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in...

fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in about:preferences#connection

Bug 41600 - Update the SVG fetch update script for fetching bridge
emojis and annotations, which we will also use for the flag emojis in
the tor circuit display.

We also:
+ Placed the bridgemoji files in a sub-directory.
+ Added a generation note to the generated files/directory.
+ Split the bridge emoji list into an external file, which we fetch in
  connectionPane.js so that the generating file is less fragile to
  a change in the javascript.
+ Store the locale emoji annotations using the string hex value as the
  key, rather than the emoji string sequence. This keeps it in line with
  the SVG file names, and removes ambiguity about whether the emoji
  character sequence includes the emoji variant selector U+FE0F or not.

browser/components/torpreferences/content/bridgemoji/1f50b.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36"><path fill="#CCD6DD" d="M24 4c0 2.209-1.791 4-4 4h-4c-2.209 0-4-1.791-4-4s1.791-4 4-4h4c2.209 0 4 1.791 4 4z"/><path fill="#E1E8ED" d="M30 32c0 2.209-1.791 4-4 4H10c-2.209 0-4-1.791-4-4V8c0-2.209 1.791-4 4-4h16c2.209 0 4 1.791 4 4v24z"/><path fill="#77B255" d="M6 8h24v24H6z"/><path fill="#F5F8FA" d="M23 14h-3v-3c0-.552-.447-1-1-1h-2c-.552 0-1 .448-1 1v3h-3c-.553 0-1 .448-1 1v2c0 .553.447 1 1 1h3v3c0 .553.448 1 1 1h2c.553 0 1-.447 1-1v-3h3c.553 0 1-.447 1-1v-2c0-.552-.447-1-1-1zM13 30c-.553 0-1-.447-1-1v-2c0-.553.447-1 1-1h10c.553 0 1 .447 1 1v2c0 .553-.447 1-1 1H13z"/></svg>
\ No newline at end of file

browser/components/torpreferences/content/bridgemoji/bridge-emojis.json

+[
+    "👽️",
+    "🤖",
+    "🧠",
+    "👁️",
+    "🧙",
+    "🧚",
+    "🧜",
+    "🐵",
+    "🦧",
+    "🐶",
+    "🐺",
+    "🦊",
+    "🦝",
+    "🐱",
+    "🦁",
+    "🐯",
+    "🐴",
+    "🦄",
+    "🦓",
+    "🦌",
+    "🐮",
+    "🐷",
+    "🐗",
+    "🐪",
+    "🦙",
+    "🦒",
+    "🐘",
+    "🦣",
+    "🦏",
+    "🐭",
+    "🐰",
+    "🐿️",
+    "🦔",
+    "🦇",
+    "🐻",
+    "🐨",
+    "🦥",
+    "🦦",
+    "🦘",
+    "🐥",
+    "🐦️",
+    "🕊️",
+    "🦆",
+    "🦉",
+    "🦤",
+    "🪶",
+    "🦩",
+    "🦚",
+    "🦜",
+    "🐊",
+    "🐢",
+    "🦎",
+    "🐍",
+    "🐲",
+    "🦕",
+    "🐳",
+    "🐬",
+    "🦭",
+    "🐟️",
+    "🐠",
+    "🦈",
+    "🐙",
+    "🐚",
+    "🐌",
+    "🦋",
+    "🐛",
+    "🐝",
+    "🐞",
+    "💐",
+    "🌹",
+    "🌺",
+    "🌻",
+    "🌷",
+    "🌲",
+    "🌳",
+    "🌴",
+    "🌵",
+    "🌿",
+    "🍁",
+    "🍇",
+    "🍈",
+    "🍉",
+    "🍊",
+    "🍋",
+    "🍌",
+    "🍍",
+    "🥭",
+    "🍏",
+    "🍐",
+    "🍑",
+    "🍒",
+    "🍓",
+    "🫐",
+    "🥝",
+    "🍅",
+    "🫒",
+    "🥥",
+    "🥑",
+    "🍆",
+    "🥕",
+    "🌽",
+    "🌶️",
+    "🥬",
+    "🥦",
+    "🧅",
+    "🍄",
+    "🥜",
+    "🥐",
+    "🥖",
+    "🥨",
+    "🥯",
+    "🥞",
+    "🧇",
+    "🍔",
+    "🍕",
+    "🌭",
+    "🌮",
+    "🍿",
+    "🦀",
+    "🦞",
+    "🍨",
+    "🍩",
+    "🍪",
+    "🎂",
+    "🧁",
+    "🍫",
+    "🍬",
+    "🍭",
+    "🫖",
+    "🧃",
+    "🧉",
+    "🧭",
+    "🏔️",
+    "🌋",
+    "🏕️",
+    "🏝️",
+    "🏡",
+    "⛲️",
+    "🎠",
+    "🎡",
+    "🎢",
+    "💈",
+    "🚆",
+    "🚋",
+    "🚍️",
+    "🚕",
+    "🚗",
+    "🚚",
+    "🚜",
+    "🛵",
+    "🛺",
+    "🛴",
+    "🛹",
+    "🛼",
+    "⚓️",
+    "⛵️",
+    "🛶",
+    "🚤",
+    "🚢",
+    "✈️",
+    "🚁",
+    "🚠",
+    "🛰️",
+    "🚀",
+    "🛸",
+    "⏰",
+    "🌙",
+    "🌡️",
+    "☀️",
+    "🪐",
+    "🌟",
+    "🌀",
+    "🌈",
+    "☂️",
+    "❄️",
+    "☄️",
+    "🔥",
+    "💧",
+    "🌊",
+    "🎃",
+    "✨",
+    "🎈",
+    "🎉",
+    "🎏",
+    "🎀",
+    "🎁",
+    "🎟️",
+    "🏆️",
+    "⚽️",
+    "🏀",
+    "🏈",
+    "🎾",
+    "🥏",
+    "🏓",
+    "🏸",
+    "🤿",
+    "🥌",
+    "🎯",
+    "🪀",
+    "🪁",
+    "🔮",
+    "🎲",
+    "🧩",
+    "🎨",
+    "🧵",
+    "👕",
+    "🧦",
+    "👗",
+    "🩳",
+    "🎒",
+    "👟",
+    "👑",
+    "🧢",
+    "💄",
+    "💍",
+    "💎",
+    "📢",
+    "🎶",
+    "🎙️",
+    "📻️",
+    "🎷",
+    "🪗",
+    "🎸",
+    "🎺",
+    "🎻",
+    "🪕",
+    "🥁",
+    "☎️",
+    "🔋",
+    "💿️",
+    "🧮",
+    "🎬️",
+    "💡",
+    "🔦",
+    "🏮",
+    "📕",
+    "🏷️",
+    "💳️",
+    "✏️",
+    "🖌️",
+    "🖍️",
+    "📌",
+    "📎",
+    "🔑",
+    "🪃",
+    "🏹",
+    "⚖️",
+    "🧲",
+    "🧪",
+    "🧬",
+    "🔬",
+    "🔭",
+    "📡",
+    "🪑",
+    "🧹",
+    "🗿"
+]