feat(dashboard, js-sdk, medusa, tax, types): custom tax providers (#12297)

* wip: setup loaders, add endpoints, module work, types, js sdk

* fix: tax module provider loader

* feat: select provider on region create, fix enpoint middleware registration

* feat: edit form

* fix: rename param

* chore: changeset

* fix: don't default to system provider

* fix: admin fixes, dispalt tax provider

* fix: some tests and types

* fix: remove provider from province regions in test

* fix: more tests, optional provider for sublevel regions, fix few types

* fix: OE test

* feat: edit tax region admin, update tax region core flow changes

* feat: migrate script

* fix: refactor

* chore: use query graph

* feat: provider section

integration-tests/http/__tests__/order-edits/order-edits.spec.ts

@@ -58,6 +58,7 @@ medusaIntegrationTestRunner({
         await api.post(
           "/admin/tax-regions",
           {
+            provider_id: "tp_system_system",
             country_code: "US",
           },
           adminHeaders

integration-tests/http/__tests__/product/store/product.spec.ts

@@ -2380,6 +2380,7 @@ medusaIntegrationTestRunner({
           `/admin/tax-regions`,
           {
             country_code: "us",
+            provider_id: "tp_system_system",
             default_tax_rate: {
               code: "default",
               rate: 5,
@@ -2393,6 +2394,7 @@ medusaIntegrationTestRunner({
           `/admin/tax-regions`,
           {
             country_code: "it",
+            provider_id: "tp_system_system",
             default_tax_rate: {
               code: "default",
               rate: 10,
@@ -2406,6 +2408,7 @@ medusaIntegrationTestRunner({
           `/admin/tax-regions`,
           {
             country_code: "dk",
+            provider_id: "tp_system_system",
             default_tax_rate: {
               code: "default",
               rate: 20,