Select shipping method UI

[atorresveiga]

Closes: #11390

Description

This PR adds the select shipping method screen and the new screen navigation and sends the selected shipping method back to the Add Shipping screen. Additionally, this PR adds two extra states to the screen: The Loading state that will be shown when the screen is fetching the shipping methods and the Error state that will be shown if the app fails to load the shipping methods.

Testing instructions

TC1

1. Open the app
2. Go to orders
3. Tap on add new order (+)
4. Tap on Add products and add a product, so the Add shipping button is enabled
5. Tap on Add shipping
6. Tap on select shipping method
7. Check that the shipping methods are displayed
8. Check that no shipping method is selected
9. Select a shipping method
10. Check that the app navigates back to the Add Shipping screen and the selected method is displayed on the Method section

TC2

1. After running the TC1 tap on the Method section
2. Check that the shipping methods are displayed
3. Check that the expected shipping method is selected

Images/gif

Screen_recording_20240509_110645.mp4

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

[dangermattic]

	3 Warnings
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.
⚠️	Class IsSelectedProvider is missing tests, but unit-tests-exemption label was set to ignore this.
⚠️	This PR is assigned to the milestone 18.6. This milestone is due in less than 2 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

Generated by 🚫 Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Flavor	Jalapeno
	Build Type	Debug
	Commit	060cc24
	Direct Download	woocommerce-prototype-build-pr11476-060cc24.apk

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 75.71429% with 17 lines in your changes are missing coverage. Please review.

Project coverage is 40.83%. Comparing base (7341f58) to head (060cc24).

Files	Patch %	Lines
...orders/creation/shipping/OrderShippingViewModel.kt	27.27%	8 Missing ⚠️
...creation/shipping/OrderShippingMethodsViewModel.kt	86.79%	5 Missing and 2 partials ⚠️
...rs/creation/shipping/OrderShippingMethodsScreen.kt	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##              trunk   #11476      +/-   ##
============================================
+ Coverage     40.80%   40.83%   +0.03%     
- Complexity     5155     5165      +10     
============================================
  Files          1060     1063       +3     
  Lines         62078    62143      +65     
  Branches       8470     8472       +2     
============================================
+ Hits          25332    25379      +47     
- Misses        34466    34482      +16     
- Partials       2280     2282       +2     

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