token distribution discovery

[5-mark]

User Story

As developer I want to know how token distribution works so I can ensure that after chain launch every stakeholder get the right amount of tokens over a given period of time.

Acceptance Criteria

1. find out about how to implement token distribution, cliff periods and vesting
2. check 2 different projects how they did it.
3. read up on the topic in the polkadot knowledge base

Additional Information

How to test

1. knowing how to approach implentation

[FiberMan]

Checked the implementation of vesting + cliff on several projects.
Mostly next three approaches are used:
- FRAME's Vesting pallet
- ORML Vesting pallet
- Custom pallet forked from above (like this) - if needed (e.g. if not only base currency should be vested or a more sophisticated schedule should be applied).

Here is a Crowdloan flow diagram that needs to be discussed before proceeding with implementation.