Create csv file with all budget data

Purpose: Parse all budget data retrieved into a csv file that can be downloaded by the browser.

User story statement(s):

As a finance user,
I want to be able to export all spending and encumbrance information for a given ledger
so that I can analyze budget information, make updates where needed etc.

Note: file name convention should be Export-"ledgerCode"-"fiscalYearCode".csv

Scenarios:

1. Scenario: 
   • Given user has started export
   • When ui has gathered all budget data for the ledger for the selected fiscal year
   • Then it creates a csv file
2. Scenario: 
   • Given export has started
   • When csv file is created
   • Then there is a row for each Expense class that contains Group , Fund and budget information for the budget corresponding to the selected fiscal year
3. Scenario: 
   • Given Funds are being parsed to csv
   • When a Fund has NO budget
   • Then Budget name for that row is "No budget found"
4. Scenario: 
   • Given data is being parsed to csv
   • When Fund data is being added
   • Then it includes the following
     • Name
     • Code
     • Status
     • Type
     • Group
     • Acquisition unit
     • Transfer from
     • Transfer to
     • External account number
     • Description
5. Scenario: 
   • Given data is being parsed to csv
   • When budget data is being added
   • Then it includes the following
     • Initial allocation
     • Allocated increase and decrease
     • Total allocation
     • Transfers
     • Total Funding
     • Budget encumbered
     • Awaiting payment
     • Expended
     • Unavailable
     • Over encumbered
     • Over expended
     • Cash balance
     • Available
     • Name
     • Status
     • Allowable encumbrance
     • Allowable expenditure
     • Date created
6. Scenario: 
   • Given data is being parsed to csv
   • When Expense class data is being added
   • Then it includes the following
     • Name
     • Code
     • Status
     • Expense class encumbered
     • Awaiting payment
     • Percentage of total expended
     • Expended
7.  Scenario: 
   • Given user has started an export
   • Once file has successfully been created
   • Then it appears in browser download queue

Note: Example of export headings can be found at https://miro.com/app/board/uXjVOGSTO4o=/?invite_link_id=432052084413