feat: Taxes template for selling/buying doctypes

[netchampfaris]

Depends on the new Print Format Builder

Do not merge until frappe/frappe#14134 is merged

How to test:

1. Create a new Print format for any of Sales Invoice, Purchase Invoice, Sales Order, Purchase Order, Quotation, Supplier Quotation
2. Now you should see a Sales Taxes and Charges (Field Template) in the sidebar. Drag it into the print format and see if it renders correctly.
3. Profit.

[codecov]

Codecov Report

Merging #28048 (8b547e3) into develop (6019f60) will increase coverage by 0.62%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #28048      +/-   ##
===========================================
+ Coverage    54.55%   55.17%   +0.62%     
===========================================
  Files         1248     1255       +7     
  Lines        67518    67871     +353     
===========================================
+ Hits         36836    37451     +615     
+ Misses       30682    30420     -262     

Impacted Files	Coverage Δ
...ctype/product_tax_category/product_tax_category.py	0.00% <0.00%> (-100.00%)	⬇️
...rations/doctype/taxjar_settings/taxjar_settings.py	29.50% <0.00%> (-70.50%)	⬇️
...wise_balance_history/batch_wise_balance_history.py	69.49% <0.00%> (-22.04%)	⬇️
...ctype/woocommerce_settings/woocommerce_settings.py	80.39% <0.00%> (-3.93%)	⬇️
...e/asset_value_adjustment/asset_value_adjustment.py	87.80% <0.00%> (-3.66%)	⬇️
erpnext/shopping_cart/utils.py	32.14% <0.00%> (-3.58%)	⬇️
erpnext/education/doctype/student/student.py	73.95% <0.00%> (-3.13%)	⬇️
erpnext/stock/report/stock_ageing/stock_ageing.py	88.48% <0.00%> (-2.16%)	⬇️
...xt/stock/report/stock_analytics/stock_analytics.py	91.08% <0.00%> (-1.99%)	⬇️
...ion/doctype/course_enrollment/course_enrollment.py	45.09% <0.00%> (-1.97%)	⬇️
... and 69 more