feat: Tax included (#370)

* feat: Tax included

* Added a toggle switch in tax settings to enable the feature.
* Database migration adding tax_included field into estimates, invoices
  and recurring invoices table.
* Toggle switch to enable and store the tax_included by estimates,
  invoices and recurring invoices.
* In case of tax included enabled, total taxes will be recalculated and
  the invoices, estimates and recurring invoices total won't be sum with
  taxes.
* Apply tax included when discount_per_item/tax_per_item item is enabled.
* Custom component to show the net total when tax included is enabled.
* Update invoice and estimates pdfs with net total.

* chore: Tax included by default

A switch button inside the tax settings to enable the tax included by
default in invoices, estimates and recurring invoices.

resources/scripts/admin/views/invoices/create/InvoiceCreate.vue

@@ -253,6 +253,14 @@ watch(
   }
 )
 
+watch(
+  () => companyStore.selectedCompanySettings?.tax_included_by_default,
+  (newVal) => {
+    invoiceStore.newInvoice.tax_included = newVal === 'YES'
+  },
+  {immediate: true}
+)
+
 async function submitForm() {
   v$.value.$touch()