[WIP] Add function to auto create #wardriving channel if missing

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Id like you help add a function that lets the app auto create the #wardriving channel if it dosnt exist. Its based on the public channels key and I dont think it should be to diffiult. Here is how the original dev did it but I think hes joining a private wardriving channel note a public

// --- Wardrive channel ---
async function createWardriveChannel() {
  const create = window.confirm(
    `Channel "${wardriveChannelName}" not found on this device. Create it now?`
  );

  if (!create) {
    throw new Error("Wardrive channel not found");
  }

  // Find a free channel index.
  const channels = await state.connection.getChannels();
  let idx = 0;
  while (idx < channels.length) {
    if (channels[idx].name === '')
      break;
    ++idx;
  }

  if (idx >= channels.length) {
    throw new Error("No free channel slots available");
  }

  // Derived secret for #wardrive 4076c315c1ef385fa93f066027320fe5
  const wardriveKey = new Uint8Array([
    0x40, 0x76, 0xC3, 0x15, 0xC1, 0xEF, 0x38, 0x5F,
    0xA9, 0x3F, 0x06, 0x60, 0x27, 0x32, 0x0F, 0xE5
  ]);

  // Create and set the connection.
  const channel = { channelIdx: idx, name: wardriveChannelName, wardriveKey };
  await state.connection.setChannel(idx, wardriveChannelName, wardriveKey);
  return channel;
}

Some other repos that may help understand how to join a public hashtag channel
https://github.com/meshcore-dev/MeshCore
https://github.com/meshcore-dev/meshcore-ha
https://github.com/meshcore-dev/meshcore-cli
https://github.com/meshcore-dev/meshcore_py
https://github.com/meshcore-dev/meshcore.js

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[MrAlders0n]

Did it a different way