Cloud save support

[loki-47-6F-64]

With this PR I'm adding cloud save support for GOG. It allows you to download, upload and delete cloud saves.

Command line options

• --galaxy-show-cloud-saves product_id/build_index -> Show remote cloud saves
• --galaxy-show-local-cloud-saves product_id/build_index -> Show cloud saves locally stored
• --galaxy-download-cloud-saves product_id/build_index -> Download cloud saves
• --galaxy-upload-cloud-saves product_id/build_index -> Upload cloud saves
• --galaxy-delete-cloud-saves product_id/build_index -> Delete cloud saves
• --cloud-whitelist path1 path2 path3... -> Only include these files
• --cloud-blacklist path1 path2 path3... -> Exclude these files
• --cloud-force -> Depending on --galaxy command -> Force download/upload cloud saves even if they're up-to-date, Delete cloud saves even if no saves have been explicitly whitelisted

Highlighted changes/additions to the code
When downloading or uploading, the relevant files are put in a queue, which will be processed in processCloudSaveDownloadQueue and processCloudSaveUploadQueue respectively

For deletion, a simple DELETE request per file you wish to delete is sufficient.

The following variables have been added to the global config

        // Cloud save options
        std::vector<std::string> cloudWhiteList;
        std::vector<std::string> cloudBlackList;
        bool bCloudForce;

Let me know what you think of it :)

[imLinguin]

I'm not sure if it's handled properly, but I wanted to let you know some games may have multiple save locations specified.
For example
game clientid: 49903594087328394)

{
"enabled": true,
"locations": [
  {
    "name": "saves",
    "location": "<?DOCUMENTS?>\/S2\/saves"
  },
  {
    "name": "mp_saves",
    "location": "<?DOCUMENTS?>\/S2\/mp_saves"
  }
]
}

Or none at all

{
"enabled": true,
"locations": [ ],
}

in that case path should fall back to __default as name, and locations are

• %LocalAppData%\GOG.com\Galaxy\Applications\%ClientID%\Storage on Windows

• ~/Library/Application Support/GOG.com/Galaxy/Applications/%ClientID%/Storage on macOS.

I did this research for Heroic Games Launcher purposes I hope it will be helpful.

[loki-47-6F-64]

{
"enabled": true,
"locations": [ ],
}

in that case path should fall back to __default as name, and locations are

• %LocalAppData%\GOG.com\Galaxy\Applications\%ClientID%\Storage on Windows
• ~/Library/Application Support/GOG.com/Galaxy/Applications/%ClientID%/Storage on macOS.

I did this research for Heroic Games Launcher purposes I hope it will be helpful.

Thanks, I've added this to the PR.

I've noticed a bug introduced in this PR that could prevent refreshing the auth token. This should be fixed before merging.

[Sude-]

Thanks for the pull request.
I took a quick look at the code and everything looks good.
I'll take a closer look at this during the weekend and merge if I don't find anything that needs fixing.