Implement restriction-based pin filtering

[bugadani]

I still need to add the actual module info and wait for #297 to get log output for the CI failures, but the rough draft is now visible here.

[bugadani]

Oh yeah this PR will fail up until the next esp-hal release...

[Copilot]

Pull request overview

This PR implements restriction-based pin filtering for ESP32 modules, replacing the dependency on esp-metadata with esp-metadata-generated from esp-hal. The system now uses pin limitation metadata to automatically filter out pins that are restricted by specific module configurations (flash, PSRAM, etc.) rather than hardcoding GPIO numbers.

Changes:

• Replaced esp-metadata dependency with esp-metadata-generated from esp-hal
• Introduced a new Chip enum wrapper that bridges to the metadata library and provides module lookup functionality
• Refactored module definitions to use string-based pin limitation tags instead of hardcoded GPIO numbers
• Updated template generation to compute reserved GPIO code based on pin limitations

Reviewed changes

Copilot reviewed 13 out of 17 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
src/lib.rs	Added new Chip enum with methods to access metadata, modules, pins, and memory regions
src/modules.rs	Completely refactored module definitions to use remove_pins with limitation tags; organized modules by chip into separate constants
src/main.rs	Updated to use new Chip API and generate reserved GPIO code by filtering pins based on module limitations
src/toolchain.rs	Updated to call chip.metadata() methods instead of direct chip methods
src/tui.rs	Changed import from esp_metadata::Chip to crate::Chip
src/template.rs	Changed import from esp_metadata::Chip to crate::Chip
src/config.rs	Changed import from esp_metadata::Chip to crate::Chip
src/check.rs	Changed to use esp_metadata_generated::Chip directly
src/module_selector.rs	Removed file (functionality moved to src/main.rs)
template/src/bin/main.rs	Simplified template to always include reserved GPIO code placeholder
template/src/bin/async_main.rs	Simplified template to always include reserved GPIO code placeholder
Cargo.toml	Updated dependency from esp-metadata to esp-metadata-generated from git
Cargo.lock	Reflected dependency changes
xtask/src/main.rs	Updated import to use esp_generate::Chip
xtask/Cargo.toml	Removed esp-metadata dependency
xtask/Cargo.lock	Reflected dependency changes
CHANGELOG.md	Added entry for module selector feature

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.