Adds shared dependencies to the workspace.
It improves the experience while managing the dependencies.
## Changes
Picked the shared dependencies of the member projects and used added
then to the workspace dependencies, https://crates.io/crates/work_dep
can help with that.
## Merge requirement checklist
* [ ]
[CONTRIBUTING](https://github.com/open-telemetry/opentelemetry-rust/blob/main/CONTRIBUTING.md)
guidelines followed
* [ ] Unit tests added/updated (if applicable)
* [ ] Appropriate `CHANGELOG.md` files updated for non-trivial,
user-facing changes
* [ ] Changes in public API reviewed (if applicable)
Zhongyang Wu
Utkarsh Umesan Pillai
Cijo Thomas
Yuta Yamaguchi
Rodolfo P A