feat: Add support for multiple budget types, introduced in version 25.

[bvanelli]

Dynamically resolves the type of budget based on the file configuration. There are now two types of budget to choose from, retrieved from the preferences table:

• Envelope budgeting (default, recommended): budgetType is rollover, table is ZeroBudgets
• Tracking budgeting: budgetType is report, table is ReflectBudgets

All budget functions will now respect the globally defined preference when creating/updating budgets.

Closes #103

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.89%. Comparing base (9ee273b) to head (1e2434f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #104      +/-   ##
==========================================
+ Coverage   97.87%   97.89%   +0.02%     
==========================================
  Files          16       16              
  Lines        2258     2283      +25     
==========================================
+ Hits         2210     2235      +25     
  Misses         48       48              

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