Zatca Update - Saudi E-Invoice app for Frappe ERPNext

Zatca Update - Saudi E-Invoice app for Frappe ERPNext

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In the new update, we have moved the Zatca setting to the company doctype and don't use JSON format for the setting page fields. We hope this will reduce the confusion that many in this group complained about. 

The Zatca setting page is still there, but it's just for backward compatibility. 

You can put CSR configuration on the Company page without JSON, as shown below. 

```

csr.common.name=TST-886431145-399999999900003

csr.serial.number=1-TST|2-TST|3-ed22f1d8-e6a2-1118-9b58-d9a8f11e874f

csr.organization.identifier=399999999900003

csr.organization.unit.name=399999999900003

csr.organization.name=Test Company LTD

csr.country.name=SA

csr.invoice.type=1100

csr.location.address=RIYADH

csr.industry.business.category=Testing zatca

```

Also fixed some rounding issues.

Thanks for your feedback and suggestions.