Add POST requests helper in WordPressOrgRestApi

[fluiddot]

Description

Add a helper function to make POST requests in WordPressOrgRestApi. Note that this is just a helper to make POST requests similar to GET function:

WordPressKit-iOS/WordPressKit/WordPressOrgRestApi.swift

Lines 28 to 32 in 27aacb2

	open func GET(_ path: String,
	parameters: [String: AnyObject]?,
	completion: @escaping Completion) -> Progress? {
	return request(method: .get, path: path, parameters: parameters, completion: completion)
	}

Most of the POST requests to WP.org Rest API made from WP-iOS use directly the request function passing the POST method.

Testing Details

WP-iOS is not making use of this helper yet, hence this change can only be tested with a test PR: wordpress-mobile/WordPress-iOS#20430. Specifically, we should test the case POST request to WPORG.

---

• Please check here if your pull request includes additional test coverage.
• I have considered updating the version in the .podspec file.
• I have considered if this change warrants release notes and have added them to the appropriate section in the CHANGELOG.md if necessary.

[SiobhyB]

Approving based on my review outlined in wordpress-mobile/WordPress-iOS#20428 (review), but will defer to Tanner's native expertise in case there's anything I may be missing.

[mokagio]

will defer to Tanner's native expertise in case there's anything I may be missing.

I'm going to step in to merge this as wordpress-mobile/WordPress-iOS#20428 depends on it and that PR is already approved and ought to go into Jetpack and WordPress 22.2

I'm doing this a bit earlier than usual (around 12 hours) because I'm trying to get ahead on the code freeze as I have another one to run tomorrow. I don't think there's any point in me waiting till tomorrow because, given we're in the weekend, it's unlikely Tanner will get to it.

[mokagio]

This is a long value to use in the test given that the response is stubbed. Is there a particular reason for use it? Having an example with real-world-like input?

[fluiddot]

We could make it shorter, the only condition is to match the content from the stub:

WordPressKit-iOS/WordPressKitTests/Mock Data/wp-reusable-blocks.json

Line 20 in e3fe762

"raw": "<!-- wp:paragraph -->\n<p>Some text<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:list -->\n<ul><li>Item 1<\/li><li>Item 2<\/li><li>Item 3<\/li><\/ul>\n<!-- \/wp:list -->",

[fluiddot]

Thanks @mokagio for taking a look at the PR and merging it 🙇. Although this PR is related to wordpress-mobile/WordPress-iOS#20428, we can safely merge it as it only introduces a new function.