feat: Add Makefile metadata header and new build-related phony targets

[0xRiz0]

PR Description

Summary

This PR enhances the project’s Makefile by introducing a metadata section and expanding phony targets for improved project lifecycle management.

Changes

• Added Makefile Metadata Natspec-style header
  • Clear section separator (# ================================================================)
  • Labels the new section as MAKEFILE METADATA
  • Improves readability and organization of the Makefile.
• Introduced additional phony targets
  • install – Set up dependencies and environment.
  • update – Refresh dependencies or project state.
  • clean – Remove build artifacts.
  • reset – Restore project to a clean state.
  • build – Compile contracts normally.
  • rebuild – Clean and rebuild contracts from scratch.
  • build-optimized – Compile contracts with optimizer enabled.
  • build-sizes – Inspect contract sizes after compilation.

Why

• Improves maintainability and readability of the Makefile with structured metadata.
• Expands build and maintenance capabilities for developers, ensuring more flexibility in common workflows.
• Aligns with best practices for project automation by providing standardized phony targets.

Impact

• No breaking changes.
• Developers gain easier tooling commands for project setup, builds, and resets.