feat: add support for tasks and unordered list markdown

[imf-ali]

Issue(s)

Tasks and unordered list does not appear in correct format as that in RC web app.

How to test or reproduce

• Tasks should display in expected form
• Unordered list should display in expected form

Screenshots

Previous behaviour

Improvement

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments

Fix #4927

[imf-ali]

Hey @diegolmello and @GleidsonDaniel , please have a look at the PR.

[imf-ali]

@GleidsonDaniel please have a look at it.

[reinaldonetof]

A quick comment, instead add a new library to the repo, can you use it the same way as other places?

As you can see here:

Rocket.Chat.ReactNative/app/containers/MessageBox/index.tsx

Lines 1119 to 1124 in 2d07b16

	<CustomIcon
	testID={tshow ? 'send-to-channel-checked' : 'send-to-channel-unchecked'}
	name={tshow ? 'checkbox-checked' : 'checkbox-unchecked'}
	size={24}
	color={themes[theme].auxiliaryText}
	/>

we are using the custom icon for the checkbox

[GleidsonDaniel]

A quick comment, instead add a new library to the repo, can you use it the same way as other places?

As you can see here:

Rocket.Chat.ReactNative/app/containers/MessageBox/index.tsx

Lines 1119 to 1124 in 2d07b16

	<CustomIcon
	testID={tshow ? 'send-to-channel-checked' : 'send-to-channel-unchecked'}
	name={tshow ? 'checkbox-checked' : 'checkbox-unchecked'}
	size={24}
	color={themes[theme].auxiliaryText}
	/>

we are using the custom icon for the checkbox

@imf-ali i think this is the best approach.

[GleidsonDaniel]

Change your PR following the pattern commented by @reinaldonetof

[imf-ali]

Changes done. Please have a look @GleidsonDaniel @reinaldonetof .
Preview of the change

[imf-ali]

@GleidsonDaniel comment addressed. Please have a look.

[GleidsonDaniel]

I saw that you sent me a private message asking for the review.
Just pay attention to one issue: Previously your PR was not reviewed because it didn't even pass the lint, so before requesting the PR check that all the steps in the checklist are correct.

[imf-ali]

I saw that you sent me a private message asking for the review. Just pay attention to one issue: Previously your PR was not reviewed because it didn't even pass the lint, so before requesting the PR check that all the steps in the checklist are correct.

Oh, sorry for the inconvenience. Will make sure next time, all the checks are successful. I have addressed the remaining comments. Kindly take a look once.