Explore options to improve future upgradeability/maintainability

[jordanschalm]

Context

Cadence has limited support for contract upgrades. We will need to upgrade FlowALP in the future. The goal of this issue is to identify changes we can make to the current contract to improve our ability to upgrade and maintain the contract in the future.

Merged

• Extract ALP components into separate contracts #160

In Review

• Split FlowALPv0 further: extract health math and position resources #183
• Add documentation to FlowALPHealth and make interest index params optional #185

Ideas

• Replace the map of position locks with a resource representing mutation rights that can be retrieved from an InternalPosition reference. The reference would only give away one such resource at a time. Need to work out the details, but I'd like to replace the "provides safety if all callsites use the lock map properly" property with a guarantee provided by the InternalPosition type that is easier to reason about.

[vishalchangrani]

TODO: @vishalchangrani to break down this into epic.
Indentify all the "must" in terms of upgradability for the launch