Switch to dart workspace

[ptisserand]

Dart 3.6.0 have introduced workspaces, it will be great to switch to dart workspaces to ensure that all packages are using the same external dependencies version.

Please note that Melos version need to be updated to 0.7.0 to support workspace:
See https://github.com/invertase/melos?tab=readme-ov-file#migrate-to-melos-7xx

[mimisavage]

Is it okay if I take this?

[ptisserand]

Is it okay if I take this?

Could you please share which dart projects have you worked on (links to PR)?

[Smartdevs17]

I’d like to work on migrating the project to Dart Workspaces to ensure all packages use the same external dependency versions. My plan includes:
Upgrading Melos to v0.7.0 for full workspace support.
Refactoring package management to align with Dart’s new workspace structure.
Verifying dependency consistency across all packages.
Testing the build process to ensure a smooth transition.
As an experienced backend engineer, I will follow best practices to make this migration seamless.
links to my dart projects: https://github.com/Smartdevs17/madang
https://github.com/Smartdevs17/writeapp