Type definition missing for matrixFrom* #3115

[Hudsxn]

Added in the typescript definitions for matrixFromRows, matrixFromColumns and matrixFromFunction, Also created a type:

MatrixStorageFormat = 'dense' | 'sparse'

And swapped out other references, and created a type for the callback function on the matrixFromFunction:

export interface MatrixFromFunctionCallback<T extends (number | BigNumber)[]> {
  (value: T): number | BigNumber
}

[josdejong]

@Hudsxn can you have a look at my feedback?

[josdejong]

Ping @Hudsxn