add module config, migrate managedFeatures

[Ylarod]

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[Copilot]

Pull Request Overview

This PR introduces a module configuration system to KernelSU, migrating the managed features mechanism from module.prop to a dedicated binary config storage format. The new system provides persistent and temporary configuration capabilities for modules, with command-line tools for management.

• Introduces binary config file format with persist/temp support for per-module configuration storage
• Migrates managed features from module.prop declarations to config system entries (manage.=true)
• Adds CLI commands for modules to manage their own configuration via KSU_MODULE environment variable
• Implements feature management authorization based on module ownership

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 19 comments.

Show a summary per file

File	Description
userspace/ksud/src/module_config.rs	New module implementing binary config file I/O, validation, and config management APIs
userspace/ksud/src/module.rs	Updates module loading to extract KSU_MODULE env var, read managed features from config, and clear configs on uninstall
userspace/ksud/src/main.rs	Registers the new module_config module
userspace/ksud/src/init_event.rs	Adds temp config cleanup during post-fs-data initialization
userspace/ksud/src/feature.rs	Updates feature system to check module ownership via config system and skip managed features during init
userspace/ksud/src/defs.rs	Defines config directory paths and file name constants
userspace/ksud/src/cli.rs	Adds module config subcommands (get, set, list, delete, clear) with persist/temp options

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