Update Sortium

[SalvadorCorreia]

Sortium

Sortium v1.0.1 update. Advanced library sorting for the Steam client based on global completion metrics.
This patch rewrites the queue pipeline, chunks backend cache, fixes rate limit delays (HLTB/SH), syncs UI error states, and resolves custom grid artwork natively.

Task Checklist

Developer

• My plugin complies with the plugin submission guidelines
• 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.
• Generative AI was used for most of the plugin's code.

Plugin Functionality

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

Backend Configuration

• I use a standard Millennium Lua backend in my plugin.
• I use custom binaries that or rely on other FOSS projects that aren't written directly using Millennium's Lua backend.

Community Contribution

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

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Testing Instructions

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

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