Create workflow to make x64 and arm64 linux builds

[micahflee]

I've hit a problem. While this apparently successfully build x64 and arm64 releases, the arm64 ones don't actually run. It crashes with the error:

16:36:08.934 › Failed to run migrations: Error: /tmp/.org.chromium.Chromium.QjEriW: cannot open shared object file: No such file or directory
    at process.func [as dlopen] (node:electron/js2c/node_init:2:2559)
    at Module._extensions..node (node:internal/modules/cjs/loader:1602:18)
    at Object.func [as .node] (node:electron/js2c/node_init:2:2786)
    at Module.load (node:internal/modules/cjs/loader:1295:32)
    at Module._load (node:internal/modules/cjs/loader:1111:12)
    at c._load (node:electron/js2c/node_init:2:16955)
    at Module.require (node:internal/modules/cjs/loader:1318:19)
    at require (node:internal/modules/helpers:179:18)
    at bindings (/usr/lib/cyd/resources/app.asar/node_modules/bindings/bindings.js:112:48)
    at new Database (/usr/lib/cyd/resources/app.asar/node_modules/better-sqlite3/lib/database.js:48:64)
    at B (/usr/lib/cyd/resources/app.asar/.vite/build/main.js:7:24222)
    at U2 (/usr/lib/cyd/resources/app.asar/.vite/build/main.js:11:248)
    at App.Md (/usr/lib/cyd/resources/app.asar/.vite/build/main.js:201:14147)
    at App.emit (node:events:531:35)

I believe this is caused by the arm64 github actions runner not actually using arm64 but instead using x86_64 and emulation. When I build on actual arm64 hardware, the final binaries work.

[micahflee]

I figured out how to set up a custom github-hosted arm64 runner!