Change the way that max premium is calculated

[MilGard91]

Context

Issue: #79

Changes proposed in this pull request

• Add a function that will calculate premium for next 4 tranches and return max premium of the pool

Test plan

Please describe the tests cases that you ran to verify your changes. Add further instructions on how to run them if needed (i.e. migration / deployment scripts, env vars, etc).

Checklist

• [x] Rebased the base branch
• [x] Attached corresponding Github issue
• [x] Prefixed the name with the type of change (i.e. feat, chore, test)
• [x] Performed a self-review of my own code
• [x] Followed the style guidelines of this project
• [ ] Made corresponding changes to the documentation
• [x] Didn't generate new warnings
• [x] Didn't generate failures on existing tests
• [ ] Added tests that prove my fix is effective or that my feature works

Review

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• :hammer: = I believe this should be changed.
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• :rocket: = Feedback

[MilGard91]

Fixed the max premium calculation by extracting the productData reducer and using it to calculate the product data for next five tranches (4 - tranches 364 days, and max premium is 365 so just in case added one more iteration). Finding the max premium while iterating and also the capacity data for the requested period. All of this is skipped if the product has fixed price and calculating everything just for a requested period.