[Hack Week] Post success view

[kean]

Fixes #https://github.com/wordpress-mobile/WordPress-iOS/issues/21509.

I've been going through the maintenance board, noticed the linked defect, and decided to resurrect this PR from the last Hack Week, which I didn't get to complete then. The new screen looks more like what you see in Gutenberg, and has a new "Promote with Blaze" button.

The initial idea was to show this automatically as part of the Prepublishing sheet, but this is a more conservative approach that simply replaced the current screen (with a slightly broken layout).

The design comes from one of the prototypes made with Chris, but with some minor changes. There've been so many versions of this, I don't any particular direction was picked as the final one in the end.

To test:

• Publish a new post
• Tap "View" on a snackbar
• ✅ Verify that the updated success screen is shown
• ✅ Verify that all buttons are working
• ✅ Verify that for Blaze-enabled blogs, "Promote with Blaze" button is visible.

Regression Notes

1. Potential unintended areas of impact: Post Publish Success Notice View
2. What I did to test those areas of impact (or what existing automated tests I relied on): manual
3. What automated tests I added (or what prevented me from doing so): n/a

PR submission checklist:

• [ ] I have completed the Regression Notes.
• [ ] I have considered adding unit tests for my changes.
• [ ] I have considered adding accessibility improvements for my changes.
• [ ] I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

Testing checklist:

• [ ] WordPress.com sites and self-hosted Jetpack sites.
• [ ] Portrait and landscape orientations.
• [ ] Light and dark modes.
• [ ] Fonts: Larger, smaller and bold text.
• [ ] High contrast.
• [ ] VoiceOver.
• [ ] Languages with large words or with letters/accents not frequently used in English.
• [ ] Right-to-left languages. (Even if translation isn’t complete, formatting should still respect the right-to-left layout)
• [ ] iPhone and iPad.
• [ ] Multi-tasking: Split view and Slide over. (iPad)

[dangermattic]

	1 Warning
:warning:	This PR is larger than 500 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.

Generated by :no_entry_sign: Danger

[kean]

Hey, I updated the design based on what we discussed.

[kean]

LGTM! Did you figure out the Podfile.lock issue?

Looks like it got updated in trunk. The change disappear after the rebase.

[wpmobilebot]

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

	App Name	WordPress Alpha
	Configuration	Release-Alpha
	Build Number	pr23128-0dc1695
	Version	24.8
	Bundle ID	org.wordpress.alpha
	Commit	0dc169502cc1ba8cec101d5610436464d11917b5
	App Center Build	WPiOS - One-Offs #9768

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[wpmobilebot]

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

	App Name	Jetpack Alpha
	Configuration	Release-Alpha
	Build Number	pr23128-0dc1695
	Version	24.8
	Bundle ID	com.jetpack.alpha
	Commit	0dc169502cc1ba8cec101d5610436464d11917b5
	App Center Build	jetpack-installable-builds #8814

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