utilizing Cargo workspaces

[theashraf]

dotLottie-rs consists of multiple crates that share common dependencies and are interdependent. In this context, utilizing Cargo workspaces is a more logical approach, particularly because the number of dotlottie-rs crates is expected to increase in the future.

Since all dynamically and statically generated libraries will be located in the root directory of the workspace, this arrangement will necessitate some adjustments to the Makefile. Additionally, the Cargo workspace will place crates artifacts and the lock file in the main directory.