Cross Compile linux armhf/arm64 artifacts

[Jai-JAP]

@Eugeny
This (finally!!) implements a better way to compile tabby for arm linux platforms than docker, quite complex than before but faster.
Completes in ~25-35 mins as compared to ~2 hours with docker based compilation method used previously.

EDIT: Also added AppImage target for linux

Previous approach is still left commented in place.
TESTED working on both arm64 and armhf

Also updated dependency from @tabby-gang/node-pty to note-pty as it has a new beta release in March. (Feel free to discard this.)

Add better cross-compilation support to scripts/vars.mjs

Prefer squash merge on this PR due to its dirty commit history.

[Jai-JAP]

Also tabby doesn't show proper icon in taskbar for RPiOS

[Jai-JAP]

This PR is now Ready to Merge

[Eugeny]

WOW amazing work @Jai-JAP !

[Jai-JAP]

@Eugeny have you seen any error as below. I incurred this when trying to get builds with node18 with an even better alternative method.

Error log

error /home/runner/work/tabby/tabby/app/node_modules/keytar: Command failed.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
Exit code: 1
Command: prebuild-install || npm run build
Arguments: 
Directory: /home/runner/work/tabby/tabby/app/node_modules/keytar
Output:
prebuild-install WARN install No prebuilt binaries found (target=3 runtime=napi arch=arm libc= platform=linux)
npm WARN lifecycle The node binary used for scripts is /tmp/yarn--1687687137895-0.09696465319662795/node but npm is using /opt/hostedtoolcache/node/18.16.1/x64/bin/node itself. Use the `--scripts-prepend-node-path` option to include the path for the node binary npm was executed with.

> keytar@7.9.0 build /home/runner/work/tabby/tabby/app/node_modules/keytar
> node-gyp rebuild

(node:25573) [DEP0150] DeprecationWarning: Setting process.config is deprecated. In the future the property will be read-only.
(Use `node --trace-deprecation ...` to show where the warning was created)
Traceback (most recent call last):
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py", line 16, in <module>
    sys.exit(gyp.script_main())
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 545, in script_main
    return main(sys.argv[1:])
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 538, in main
    return gyp_main(args)
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 514, in gyp_main
    options.duplicate_basename_check)
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 130, in Load
    params['parallel'], params['root_targets'])
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 2778, in Load
    variables, includes, depth, check, True)
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 394, in LoadTargetBuildFile
    includes, True, check)
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 266, in LoadOneBuildFile
    aux_data, includes, check)
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 303, in LoadBuildFileIncludesIntoDict
    LoadOneBuildFile(include, data, aux_data, None, False, check),
  File "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 246, in LoadOneBuildFile
    None)
  File "/home/runner/.node-gyp/18.16.1/include/node/common.gypi", line 1
    e_data_file_flag%': 1
                        ^
SyntaxError: EOL while scanning string literal
gyp ERR! configure error 
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/lib/configure.js:336:16)
gyp ERR! stack     at ChildProcess.emit (node:events:513:28)
gyp ERR! stack     at ChildProcess._handle.onexit (node:internal/child_process:291:12)
gyp ERR! System Linux 5.15.0-1040-azure
gyp ERR! command "/opt/hostedtoolcache/node/18.16.1/x64/bin/node" "/home/runner/work/tabby/tabby/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/runner/work/tabby/tabby/app/node_modules/keytar
gyp ERR! node -v v18.16.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok 
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! keytar@7.9.0 build: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the keytar@7.9.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/runner/.npm/_logs/2023-06-25T09_59_06_738Z-debug.log

And do you have discord or any other social media where I can DM you to discuss these and keep these threads clean.

[Eugeny]

No, haven't seen this before. Can you maybe check if there's a newer keytar version available?

[Eugeny]

btw I'm only on twitter (in my profile) but IMO Github is better for this :)