feat: Auto set Party in Bank Transaction (#34675)

* feat: Party auto-matcher from Bank Transaction data

- Created Bank Party Mapper
- Created class to auto match by account/iban or party name/description(fuzzy)
- Automatch and set in transaction or create mapper
- `rapidfuzz` introduced

* chore: Single query with or filter to search Party Mapper by name/desc

* feat: Store Party bank details in party records (Customer/Supplier/Employee/Shareholder)

* fix: Don't set description as key in Mapper doc if matched by description

- Description is volatile and will keep changing
- It will lead to multiple Bank Party Mapper docs for the same party that will never be referenced again
- Parts of the descripton keep changing which is why it will never match a mapper record
- If matched by desc, dont create mapper record.

* feat: Manually Update/Correct Party in Bank Transaction

- On updating bank trans.n party after submit, the corresponding mapper doc will be updated too
- The mapper doc in turn will update all linked bank transactions that do not have this updated value
- Added Bank Party Mapper hidden link in Bank Transaction
- Rename field in BPM to `Party Name` as it does not hold description data
- If a BT matches with a BPM record, link that record in the BT

* chore: Perform automatch on submit

- misc: Clearer naming

* chore: Make auto matching party configurable

- Checkbox in Accounts settings "Enable Automatic Party Matching"
- Check before invoking automatching methods
- misc: Remove TODO comments

* fix: Match by both Account No and IBAN & other cleanups

- A BT could have both account and iban, and a Supplier could have only IBAN set
- In this case, matching by either (only account) gives no match
- Match by Account OR IBAN, use `or_filters`
- If matched, set both account no. and IBAN in Bank Party Mapper

- Explain AutoMatchParty
- Add type hints to return values
- Use `set_value` to set values in BT after matching since its an after submit event

* test: Match by Account No, IBAN, Party Name, Desc and match correction

* fix: Remove bank details fields from Shareholder

* fix: Use existing bank fields to match by bank account no/IBAN

- Remove newly added fields in Party doctypes to store bank details
- Use Bank Account's fields to match against account no/iban
- For employee, if Bank Account does not exist, find in Employee doctype against account no/iban

* fix: Tests

* feat: Optional Fuzzy Matching & Skip Matches for multiple similar matches

- Fuzzy matching can be enabled optionally in the settings
- If a query gets multiple matches with the same score, do not set a party as it is an extremely close call
- misc: Add 'cancelled' status to Bank transaction
- Test for skipping matching with extremely close matches

* chore: Remove Bank Party Mapper implementation

- Matching by Acc No/IBAN can easily happen with Bank Accounts. It's not a tedious query
- Historical lookups for  Party Name/Desc match are very tricky. The user could have manually set a match and we would not know. Also this leaves the Bank Party Mapper only useful for Party Name/Desc lookups, which feels excessive.
- We want to reduce the number of places the same data is stored and reduce confusion
- The Party Name/Desc will optionally happen fuzzily, or not at all
- There will be no Mapper lookups

* chore: Remove instances of `bank_party_mapper` and use `new_doc`

erpnext/setup/doctype/employee/employee.json

@@ -78,7 +78,9 @@
   "salary_mode",
   "bank_details_section",
   "bank_name",
+  "column_break_heye",
   "bank_ac_no",
+  "iban",
   "personal_details",
   "marital_status",
   "family_background",
@@ -804,17 +806,26 @@
   {
    "fieldname": "column_break_104",
    "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "column_break_heye",
+   "fieldtype": "Column Break"
+  },
+  {
+   "depends_on": "eval:doc.salary_mode == 'Bank'",
+   "fieldname": "iban",
+   "fieldtype": "Data",
+   "label": "IBAN"
   }
  ],
  "icon": "fa fa-user",
  "idx": 24,
  "image_field": "image",
  "links": [],
- "modified": "2022-09-13 10:27:14.579197",
+ "modified": "2023-03-30 15:57:05.174592",
  "modified_by": "Administrator",
  "module": "Setup",
  "name": "Employee",
- "name_case": "Title Case",
  "naming_rule": "By \"Naming Series\" field",
  "owner": "Administrator",
  "permissions": [