Create InsetText View, ViewComponent and Model

[akdalin-hee]

Description

Create InsetText View, ViewComponent and Model

Screenshots

Paste screenshots for all views created or changed: mobile, tablet and desktop, wave analyser showing no errors.

---

Developer checks

(Leave tasks unticked if they haven't been appropriate for your ticket.)

I have:

• Run the IDE auto formatter on all files I’ve worked on and made sure there are no IDE errors relating to them
• Written or updated tests for the changes and made sure all tests are passing
• Manually tested my work with and without JavaScript (adding notes where functionality requires JavaScript)
• Tested with Wave Chrome plugin. Addressed any valid accessibility issues and documented any invalid errors
• Scanned over my pull request in GitHub and addressed any warnings from the GitHub Build and Test checks in the GitHub PR ‘Files Changed’ tab
  Either:
• Documented my work in Confluence, updating any business rules applied or modified. Updated GitHub readme/documentation for the repository if appropriate. List of documentation links added/changed:
  • doc_1_here
    Or:
• Confirmed that none of the work that I have undertaken requires any updates to documentation
• CHANGELOG entry

[akdalin-hee]

Different from the DLS version, I've added a default value for the cssClass variable as it would otherwise require at each initialisation.
Additionally, Model.Text is rendered as Raw.HTML so that it can render links (<a href>) as well.

[kevwhitt-hee]

See inline code comments

[kevwhitt-hee]

Why are we including this parameter? Do we ever alter the class of an inset text div?

[kevwhitt-hee]

would it be better to name this as contentHtml if we are rendering it as HTML below - @Html.Raw(Model.Text) ?