Refactor currency handling to use pesa

[18alantom]

Currency Refactor

PR pertains to refactoring books to use pesa to handle monetary calculations.

Pesa initialization

1. Initialized immediately after db connect.
2. If setup is incomplete currency is not available; ∴ initialized with default "XXX" code for no currency.
3. if setup incomplete, on submit with the entered currency.

Todo List

• All javascript calculations should take place through pesa methods.
• All sql queries should cast the values to number first.
• Deprecate earlier handling of precision.
• Setting display should change the number of significant digits displayed.
• On storing the values in the db, use string type and use Money#store
  which will get a precision adjusted decimal string.
• When a doc is being fetched the currency values should be converted to the
  Money object.
• Patch that converts values to store strings.
• After db init when currency and internalPrecision are available set pesa on
  the global object.

Other Changes

• Model#field#validate(value, doc) will be called before update in Base.vue on blurring of the input field. Validations will be inline, previous change has been removed cause they are called on doc.set.

Screen.Recording.2022-01-10.at.13.46.10.mov

• This function should throw an error if invalid, this will be show in a message box.
• Int and Float types now have number inputs, Model#field#minValue and Model#field#maxValue can be used to restrict the range.
• Added Locale in System Settings to set Intl.NumberFormat

FrappeJS: frappe/frappejs#153

[18alantom]

All builds are gonna fail cause they're dependent on the make-money branch of frappejs.

[18alantom]

Merging this should close #284 and #185