Bondtype changes

[JuaniRios]

• We unify bids and contributions under one lock type called "Participation".
• Rename BondType -> LockType to follow the documentation
• Evaluation-locked plmc, can now be used for participating (i.e bids and contributions)
• Instantiating Projects with the test framework now works with evaluators being participants.
• New tests for edge cases
• New tests for helper functions when calculating PLMC spent (they all passed on the first try, so all good 😄 )

[linear]

PLMC-209 BondType changes

• No more distinction between each phase. Only the project it was made for.
• Evaluation bonds should still be available to be used for bids and contributions. Therefore the evaluation bond should be a different category.
• Leave LongTermHolderBonus out for now

Idea :

BondType<ProjectId> {
   Evaluation(ProjectId),
   Participation(ProjectId), // bids, contributions
}

The changes on the BondType struct will imply a lot of other changes in the protocol.

For example, the unvesting functions were separated into each bond type

leonardo thoughts?