Add Steamworks Support

[arthuro555]

Adds a steamworks.js integration to GDevelop.

The namespaces networking and overlay were not implemented because overlay is not released yet and networking only supports old deprecated steam networking instead of the new one.

The events were tested by running them in the event sheets, although I could confirm they do not crash the game and do something, I could not always confirm that the correct behavior is yielded since I do not have a real steam game to test on. Notably, I could not test whether or not Steam Input and Steam Workshop were fully working.

[arthuro555]

Testing build download URL: https://s3.arthuro555.com/GDevelop_Steamworks.exe

[Silver-Streak]

@arthuro555

Missing icon on this action on the test build:

[arthuro555]

Fixed 👍

[4ian]

Looks good overall!

[arthuro555]

Note to anyone that used the test build above: some internal condition names have changed, and thus will not be recognized by GDevelop once the feature releases, you will have to re-add those conditions!

[arthuro555]

(This is ready for another review/merging, by the way)

[4ian]

This makes the macOS code signing to fail: see https://app.circleci.com/pipelines/github/4ian/GDevelop/10204/workflows/facc11a8-54f2-4de7-9af0-b61df63f63a6/jobs/11290

⨯ Command failed: codesign --sign FB6D820A03351D2A14358DEB71ACF68A9ACC2CCE --force --keychain /var/folders/bl/wbxjgtzx7j5_mjsmfr3ynlc00000gp/T/f0dd2d22bf3ebf95800bc2cac4ce74a5430f4d93ec74f5e0171b03fbbf715269.keychain --timestamp --options runtime --entitlements /Users/distiller/project/newIDE/electron-app/build/entitlements.mac.inherit.plist /Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node
fatal error: /Applications/Xcode-12.5.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate: can't allocate code signature data for: /Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node (for architecture x86_64) because larger updated load commands do not fit (the program must be relinked using a larger -headerpad value)
/Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node: the codesign_allocate helper tool cannot be found or used
  failedTask=build stackTrace=Error: Command failed: codesign --sign FB6D820A03351D2A14358DEB71ACF68A9ACC2CCE --force --keychain /var/folders/bl/wbxjgtzx7j5_mjsmfr3ynlc00000gp/T/f0dd2d22bf3ebf95800bc2cac4ce74a5430f4d93ec74f5e0171b03fbbf715269.keychain --timestamp --options runtime --entitlements /Users/distiller/project/newIDE/electron-app/build/entitlements.mac.inherit.plist /Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node
fatal error: /Applications/Xcode-12.5.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate: can't allocate code signature data for: /Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node (for architecture x86_64) because larger updated load commands do not fit (the program must be relinked using a larger -headerpad value)
/Users/distiller/project/newIDE/electron-app/dist/mac/GDevelop 5.app/Contents/Resources/app.asar.unpacked/node_modules/steamworks.js/dist/osx/steamworksjs.darwin-x64.node: the codesign_allocate helper tool cannot be found or used
               

I read "because larger updated load commands do not fit (the program must be relinked using a larger -headerpad value)
" => is this something to fix on Steamworks.js side? cc @arthuro555

I Tried to not code-sign the executable but then notarization fails: see #5437

I'm reverting this, so we can open a new PR but test the macOS build before merging :) @arthuro555 you can open the PR again with experimental-build/ as a prefix so that builds are being made. EDIT: actually you can't from a fork, @AlexandreSi, @ClementPasteau or myself will do it.

[arthuro555]

I'm reverting this, so we can open a new PR but test the macOS build before merging :) @arthuro555 you can open the PR again with experimental-build/ as a prefix so that builds are being made.

I don't have any accesses to this repository, so I cannot create a branch on it. I don't think the CI will build experimental builds if I prefix a branch on my fork experimental-build/, would it?

[4ian]

Unfortunately it won't indeed. Can you re-open a new PR and we will make a branch experimental-build for it?

Include the change to config.yml you can see in https://github.com/4ian/GDevelop/pull/5437/files - it's temporary but will allow the branch we'll do to actually do the code signing (and so, we can actually test fixes).

I wonder if we should open an issue on steamworks.js - seems like the node executables need some flag when building them.