Document esp-rtos just a bit

[bugadani]

No description provided.

[Copilot]

Pull Request Overview

This PR adds comprehensive documentation to the esp-rtos crate, including module-level documentation, function documentation, and configuration attributes for docs.rs generation.

• Adds module-level and API documentation throughout esp-rtos
• Configures documentation generation with appropriate feature flags and doc attributes
• Updates migration guide with detailed embassy transition information

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
esp-rtos/src/semaphore.rs	Adds module documentation and comprehensive function documentation for semaphore operations
esp-rtos/src/lib.rs	Adds docs.rs configuration, missing docs lint, and documentation attributes
esp-rtos/src/embassy/mod.rs	Adds module and type documentation for embassy executors
esp-rtos/esp_config.yml	Removes unused stack-guard-value configuration option
esp-rtos/Cargo.toml	Updates documentation feature configuration for docs.rs
esp-hal/MIGRATING-1.0.0-rc.0.md	Adds comprehensive migration guide sections for RMT and embassy changes
esp-hal-procmacros/src/lib.rs	Updates documentation to reflect embassy macro changes
esp-alloc/src/lib.rs	Fixes documentation references from Heap to EspHeap

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[bugadani]

leftover, we are stealing the config from esp-hal now in build.rs

[JurajSadel]

Thanks!