* feat: Created doctype for GSTR3B report and added boilerplate code
* feat: Updated gst_fields and patches for gst_category
* feat: Functions for calculating itc amount
* fix: Patched eligibility_for_itc_field
* fix: Updated set_category for gst
* fix: Function for setting iter_state supplies
* fix: Changed route to regional module, minor fix in inster_state_supply grouping and fixes in print format
* fix(style): Added missing semicolon and removed unused imports
* fix: Patch field only if column is available
* fix: Make custom fields only for india sepecific company
* fix: Add intro to gstr3b report
* fix: Updated patch in patches.txt
* fix: Update patches.txt
* fix: Update patch to set GST Category
* fix: Add fields for nil rated and non gst in item master
* fix: Added logic for nil rated and non gst inward flow
* fix: Initial test case for GSTR3B Report
* fix: Codacy fixes
* fix: Test Case fixes
* fix: Add link for gstr_3b_report in accounting module
* fix: Updated report template
* fix: Changes in GSTR3B Report doctype
* fix: Added function to get missing field invoices
* fix: Added more test cases
* fix: Item not found error in test case
* fix: Key error in state numbers
* fix: Changes in GSTR3b Doctype
* fix: Changed functions to method
* fix: Minor fix in patch
* fix: Add gst_ctegory in GST Reports
* fix: Minor fixes in patch and itc_mapping
* fix: Query to patch itc field
* fix: Patch registered customers and fix for multiple gst accounts
* fix: Test case
* fix: Total taxable calculation logic fix and template enhancement
* fix: Calculate txval seperately
* fix: itc amount calculation fix and patch improvement
* fix: Updated test_cases for itc calculation
* fix: Missing field query
* fix: Multiple minor fixes inreport
* fix: Added transalations in GSTR3B-Form
* fix: Use double underscore for translation
* fix: GST fields ordering fix
* fix: Print form precision fix and get_period function fix
