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.

app/Http/Resources/EstimateResource.php

@@ -21,6 +21,7 @@ class EstimateResource extends JsonResource
             'status' => $this->status,
             'reference_number' => $this->reference_number,
             'tax_per_item' => $this->tax_per_item,
+            'tax_included' => $this->tax_included,
             'discount_per_item' => $this->discount_per_item,
             'notes' => $this->getNotes(),
             'discount' => $this->discount,

app/Http/Resources/InvoiceResource.php

@@ -22,6 +22,7 @@ class InvoiceResource extends JsonResource
             'status' => $this->status,
             'paid_status' => $this->paid_status,
             'tax_per_item' => $this->tax_per_item,
+            'tax_included' => $this->tax_included,
             'discount_per_item' => $this->discount_per_item,
             'notes' => $this->notes,
             'discount_type' => $this->discount_type,

app/Http/Resources/RecurringInvoiceResource.php

@@ -32,6 +32,7 @@ class RecurringInvoiceResource extends JsonResource
             'limit_date' => $this->limit_date,
             'exchange_rate' => $this->exchange_rate,
             'tax_per_item' => $this->tax_per_item,
+            'tax_included' => $this->tax_included,
             'discount_per_item' => $this->discount_per_item,
             'notes' => $this->notes,
             'discount_type' => $this->discount_type,