Workspaces

[erhant]

• [x] A step towards #125
• [x] Moves p2p logic under the dkn-p2p crate
• [x] Moves workflows & models logic under the dkn-workflows crate
• [x] Fixes a bug within config & model elimination in Compute node main.rs
• [x] Overall renames and refactors
• [x] More integration tests, especially for P2P and Workflows
• [x] Remove redundant packages
• [x] Remove profiling feature, we instead have a variable DKN_EXIT_TIMEOUT that if defined will make the program exit
• [x] Re-enabled tests workflow