feat(India): Bootstrapped GST Setup

[deepeshgarg007]

Back Port Of: #25415

no-docs

[coveralls]

Coverage decreased (-0.0007%) to 42.925% when pulling be773f4 on deepeshgarg007:bootstrapped_gst_setup_develop into c978fdf on frappe:develop.

[umairsy]

• Set default tax rate to zero
• In Sales Taxes and Charges Master, set rate to zero

1. The name of Item Tax Template is GST-9%, It should be GST-18%
2. The chart of account creates tax account heads with a percentage 9 added. It should be 0
3. The sales tax template and purchase tax template also have a percentage set to 9 or 18 percent. It should be 0.
4. Further to point 3, the name (description) should also not have 9% in it. This gets printed in Sales Invoice even when the percentage is not 9%
5. 2. account head where tax percentage should be 0 by default

@deepeshgarg007 can we get these records reviewed and assigned to someone please?