FEC-39: Fix models related to Batch 2 (Part 1)

[jaikumar-tj]

Summary

In this PR, there are 3 main changes that are done to the existing models in the project. The changes are related to the commons, inventory-entry, and product-type models.

Common

• Introduced a new model called discounted-price

Inventory Entry

• Updated the transformer file to conditionally send the supplyChannel, making it optional

Product Type

• Added new presets for enum and localized enum types

[changeset-bot]

🦋 Changeset detected

Latest commit: fbdcc4a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 43 packages

Name	Type
@commercetools-test-data/product-type	Minor
@commercetools-test-data/commons	Minor
@commercetools-test-data/inventory-entry	Minor
@commercetools-test-data/cart-discount	Minor
@commercetools-test-data/product-discount	Minor
@commercetools-test-data/product-projection	Minor
@commercetools-test-data/product	Minor
@commercetools-test-data/associate-role	Minor
@commercetools-test-data/business-unit	Minor
@commercetools-test-data/cart	Minor
@commercetools-test-data/category	Minor
@commercetools-test-data/channel	Minor
@commercetools-test-data/custom-application	Minor
@commercetools-test-data/custom-object	Minor
@commercetools-test-data/custom-view	Minor
@commercetools-test-data/customer-group	Minor
@commercetools-test-data/customer	Minor
@commercetools-test-data/discount-code	Minor
@commercetools-test-data/discounts-custom-view	Minor
@commercetools-test-data/order	Minor
@commercetools-test-data/organization	Minor
@commercetools-test-data/payment	Minor
@commercetools-test-data/product-selection	Minor
@commercetools-test-data/quote-request	Minor
@commercetools-test-data/quote	Minor
@commercetools-test-data/review	Minor
@commercetools-test-data/shipping-method	Minor
@commercetools-test-data/shopping-list	Minor
@commercetools-test-data/staged-quote	Minor
@commercetools-test-data/standalone-price	Minor
@commercetools-test-data/state	Minor
@commercetools-test-data/store	Minor
@commercetools-test-data/tax-category	Minor
@commercetools-test-data/type	Minor
@commercetools-test-data/user	Minor
@commercetools-test-data/zone	Minor
@commercetools-test-data/organization-extension	Minor
@commercetools-test-data/project-extension	Minor
@commercetools-test-data/core	Minor
@commercetools-test-data/graphql-types	Minor
@commercetools-test-data/filter-values	Minor
@commercetools-test-data/project	Minor
@commercetools-test-data/utils	Minor

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[CarlosCortizasCT]

@jaikumar-tj please bear in mind the InventoryEntry model is already being updated for the same reason in this already opened PR.