Add option to calculate tax from vendor's store location.

[J-H-Mojumder]

Is your feature request related to a problem? Please describe.

Currently, we use the tax calculation to be the ones offered by WooCommerce, Store Location(marketplace location), Customer's Billing Address, or Customer's Shipping Address as shown in this screenshot.

So, we are unable to let the system calculate tax from the vendor's store location which creates an issue for the marketplaces that are based on countries like USA where the tax varies from state to state depending on the store location of the vendor.

Describe the solution you'd like

We might add another option to the dropdown to let the system calculate tax from the vendor's store location.

Describe alternatives you've considered

No response

Additional context

A client from the USA reached out to us in a ticket and also shared his frustration on Facebook regarding this long-known issue of Dokan. [Facebook community post link]