Add Mark for Inline Code in Block Editor

User Story

As a user, I want to be able to include code snippets inline with paragraph/list/etc text in the Block Editor. We've got a code block, but things can get awkward when we're just trying to apply monospace/other code stylings to a single variable name or similar within otherwise normal text.

It is possible for a dotCMS user to create a custom mark to serve this role, but I think it would be even better to include inline code as a standard/default Block Editor mark.

EDIT: It seems that surrounding inline code with backticks does create an obvious code block on the back end; this is not necessarily styled on the front, and there's no way to undo that styling without deleting the modified text and retyping. So, I really think a bubble-menu button would be a straightforward improvement.

Acceptance Criteria

• Add code mark for non-code-block text There's a chance this has already been implemented, though results seem inconsistent (see below, and similar recent instances)
• Add button to bubble menu to apply code mark

Proposed Objective

User Experience

Proposed Priority

Priority 3 - Average

Start with the Block Editor's existing inline-code behavior and bubble menu, checking whether a code mark is already available and why backtick-created code is inconsistent. Done means the bubble menu exposes a button that applies the inline code mark to non-code-block text and allows the resulting styling to be removed.