Introduced snippet_title component

What does this MR do?

MR 4/6 in the plan for #34820 (closed). Hence ⚠ this should not close original issue (though merging in master should happen) as the development happens behind the feature flag

The MR refactors snippet view's title (Title + Description + Edited information) component into Vue with support for GraphQL and Apollo.

Screenshots

Before	After

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

1. Enable the snippets_vue feature flag in Rails console (rails c):

Feature.enable(:snippets_vue)

2. Navigate to any snippet. Only the header (the component in question for this MR) will be rendered. The component will be implemented in Vue rather than in HAML

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Relates to #34820 (closed)