### What
Leverage yarn workspaces and Turborepo for integration-tests in order to accelerate development and reduce DevX complexity.
### Why
The current solution for running integration tests requires using `medusa-dev-cli` in order to publish packages to a local npm repository. The package where the command is executed will have its package.json altered for any known medusa dependency in order to install from the local npm. The process is taxing on the host machine resources and prevents rapid iterations when working with integration tests.
For more information, see documentation: https://github.com/medusajs/medusa/blob/f0cc1b324c964680c26e0d5c1d45769cbd750176/docs/content/usage/local-development.md#run-api-integration-tests
### How
By declaring `integeration-tests/**/*` as a workspace, Turborepo can now be leveraged to build and run integration test as if there were packages. The build process will take care of interdependency between package in order to ensure local dependency are met.
In addition, within each integration-tests "packages", we can declare local dependencies as "*" which will translate to using the one that is part of the current build, regardless of the dependency's version number. No more fiddling with version numbers.
Github actions pertaining to integration-tests have been streamlined to use the new behavior.
The integration-tests packages have been marked as `private:true` in order to avoid publishing them to the public npm registry.
### Testing
```
cd root-of-medusajs-medusa-repo/
yarn install
yarn build
yarn test:integration:api
yarn test:integration:plugins
```
After a code change, `yarn build` must be run before re-running an integration test, which is the same procedure as for unit tests.
Resolves: CORE-845
### What
OAS: Explicitly declare type:object on schemas with properties.
### Why
While not officially required, schemas with properties should have their type explicitly declared as "object". Omitting the type translates to type: any with properties XYZ. The ambiguity can lead to issues when using code generators.
### How
Multiple regex searches to identify schemas missing type: object. Manually edit each schema. Spot check generated OAS.
### Testing
- Ran OAS validator.
- Ran docs build script
### Proof
RESOLVES CORE-847
**What**
Fix system error (500) with DraftOrder create operation when payload includes discount in a tax-inclusive context.
**How**
* Ensure newly created cart contains all required relation in order to calculate line item tax-inclusive pricing with discounts.
* Add resilience to TotalsService.getLineDiscounts()
* Ensure newly generate line items have variant relation loaded.
* fix TotalsService.getLineItemTotals to use the passed lineItem instead of relying on cartOrOrder.items.
**Test**
* Unit:
* TotalsService.getLineDiscounts - coverage
* Integration:
* Admin API draft-order - coverage
* Admin API draft-order create w/ discount in tax-inclusive
Resolves: CORE-771
Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>
Co-authored-by: Adrien de Peretti <25098370+adrien2p@users.noreply.github.com>
Patrick
