[Rich text editor] Add inline code to rich text editor

[jonnyandrew]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

• Add inline formatting button to the rich text editor
• Add inline code styling to the timeline
• Fixes Inline code formatted messages display with extra line breaks #7975
  • (through a workaround for Extra new lines inserted in front of HTML inline code noties/Markwon#423)
• Refactor Markwon plugins into named variables

Motivation and context

PSU-1069

Screenshots / GIFs

Timeline, with rich text editor enabled

	Before	After
Light
Dark

Timeline, with rich text editor disabled

	Before	After
Light
Dark

Inline code in the editor

editor.webm

Tests

• Enable rich text editor in labs
• Start typing a message
• Use the new formatting button to create inline code
• Send the message
• Note the new formatting in the timeline

Tested devices

• Physical
• Emulator
• OS version(s): Android 13

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[bmarty]

LGTM, just a question about the usage of io.element.android.wysiwyg.EditorStyledTextView.

[bmarty]

I understand that this will be used even if the lab flag is disabled for the rich text composer. Can it be an issue?
I mean if the app crashes because of io.element.android.wysiwyg.EditorStyledTextView, the users will not be able to disable the lab flag to fallback to a stable version.

[jonnyandrew]

I've updated so that the text view class will depend on whether the rich text editor is enabled in Labs: 4107887

[bmarty]

LGTM, thanks!

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

76.6% Coverage
0.0% Duplication