Update steam-collections-plus to v2.0.1

[luthor112]

Collections+

• Update libs, update ReadMe, bump version
• New feature: Start/Show random application
• New feature: Collection folders
• New feature: Collection management UI for applications
• New feature: Filter collection

Task Checklist

Developer

• I am the original author or an authorized maintainer of this plugin.
• I have complied with all license requirements for the libraries used, including providing appropriate notices where necessary.
• My plugin is fully open source and does not depend on any external paid services, except for widely trusted and well-known platforms. Additionally, neither I nor anyone associated with me profits from any such services.

Plugin Functionality

• I have tested the plugin on both the Stable and Beta Steam update channels.

Backend Configuration

• Yes: I use a standard Millennium python backend in my plugin.
• No: I use custom binaries that or rely on other FOSS projects that aren't written directly using Millennium's python backend.

Community Contribution

• I have tested and left feedback on two other plugin pull requests.
• I have added links to those feedback comments in this PR.

---

Testing Instructions

• Verified by a third party on Steam Client Stable.
• Verified by a third party on Steam Client Beta.

[shdwmtr]

You put a config.json in you plugin directory. This means whenever your plugin updates it will be overridden with the contents from your repo. I didn't check the rest of the repo, but if you write to that file and don't want it to reset every update, don't include a pre-generated config file, create it and write to it from python.

[luthor112]

Good idea.
I should probably implement that in all plugins, but I think I'll do it later. I'd like to be over with the current PRs first.

[luthor112]

To be more exact, it would be best to move most of my plugins from JSON file configs to UI-based configs. But I'm not there yet.