docs: updates to use DML and other changes (#7834)

- Change existing data model guides and add new ones for DML
- Change module's docs around service factory + remove guides that are now necessary
- Hide/remove all mentions of module relationships, or label them as coming soon.
- Change all data model creation snippets to use DML
- use `property` instead of `field` when referring to a data model's properties.
- Fix all snippets in commerce module guides to use new method suffix (no more main model methods)
- Rework recipes, removing/hiding a lot of sections as a lot of recipes are incomplete with the current state of DML.


### Other changes

- Highlight fixes in some guides
- Remove feature flags guide
- Fix code block styles when there are no line numbers.

### Upcoming changes in other PRs

- Re-generate commerce module references (for the updates in the method names)
- Ensure that the data model references are generated correctly for models using DML.
- (probably at a very later point) revisit recipes

www/apps/resources/app/commerce-modules/tax/examples/page.mdx

@@ -91,7 +91,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
     )
 
     res.json({
-      tax_regions: await taxModuleService.list(),
+      tax_regions: await taxModuleService.listTaxRegions(),
     })
   }
   ```
@@ -110,7 +110,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
     const taxModuleService = await initializeTaxModule()
 
     return NextResponse.json({
-      tax_regions: await taxModuleService.list(),
+      tax_regions: await taxModuleService.listTaxRegions(),
     })
   }
   ```
@@ -138,7 +138,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
       ModuleRegistrationName.TAX
     )
 
-    const taxRate = await taxModuleService.create({
+    const taxRate = await taxModuleService.createTaxRates({
       tax_region_id: "txreg_123",
       name: "Custom rate",
       rate: 15,
@@ -175,7 +175,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
   ) {
     const taxModuleService = await initializeTaxModule()
 
-    const taxRate = await taxModuleService.create({
+    const taxRate = await taxModuleService.createTaxRates({
       tax_region_id: "txreg_123",
       name: "Custom rate",
       rate: 15,
@@ -221,7 +221,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
     )
 
     res.json({
-      tax_rates: await taxModuleService.list(),
+      tax_rates: await taxModuleService.listTaxRates(),
     })
   }
   ```
@@ -242,7 +242,7 @@ In this guide, you’ll find common examples of how you can use the Tax Module i
     const taxModuleService = await initializeTaxModule()
 
     return NextResponse.json({
-      tax_rates: await taxModuleService.list(),
+      tax_rates: await taxModuleService.listTaxRates(),
     })
   }
   ```