Improved sorting algorithm - Automatically Infer the type of the data passed in!

[pavankataria]

Summary:

• Improves the sorting algorithm for columns by scanning the data passed into the SwiftDataTable class and automatically infer the type of the data.
• Changes Cell Row Representable to use A new DataTableValueType that moves away from the [[String]] row construction.

Technical:

• original initialiser has been moved to a convenience one. users can still inject [[String]] into the SwiftDataTable class: [[String]].
• Adds a new DataTableValueType.
• Adds a string representation method for DataTableValueType.
• Refactors Data Cell and Data CellViewModel to incorporate DataCellTypeValue 724a6f0
• Adds a comparable implementation for DataTableValueType 29616b2 & c12ea98
• Adds optional initialiser to DataTableValueType to automatically infer the right value type. f3d9d2c
  Improves the type detection algorithm for DataTableValueType enum b0254e8