[#39] [Backend] As a user, I can see the chart on the Detail screen

[minhnimble]

• Close #39

What happened 👀

• Create the new Repository functions and GetChartPricesUseCase along with all the necessary protocols.
• Create new models for parsing data with cross-application usage: APIPrices, DataPoint, ChartDataPoint, TimeFilters, etc.
• Create a supporting enum - TimeFilter that can help provides different days range for API usage:
  • 1D = 1 day
  • 1W = 7 days
  • 1M = 30 days
  • 1Y = 365 days
  • 5Y = 1285 days (365*5)
• Add unit tests for Repository and UseCase layers.

Insight 📝

• No major highlights, just reusing the established architecture and adding new UseCase and Repository functions for getting chart data.

• There is a small notice that the TimeFilters enum is decided to be placed inside the Domain package instead of the Data package because of our current dependencies setup. The Domain package is currently imported into the Data package so if we implement the enum in Data, it will create a recursive importing cycle - Domain -> Data -> Domain. This will lead to a build failed issue prompted by Xcode. ⚠️

Proof Of Work 📹

All tests passed:

• Repository layer:

• Usecase layer: