Introduced a new macro `render` in `partials/oneliner.html` to handle
the display of the oneliner for cases. This macro encapsulates the logic
for rendering the oneliner, including states for ready, empty, error,
pending, and generating.
The `case_page.html` and `my_cases.html` templates are updated to use
this new macro. This refactoring centralizes the oneliner rendering
logic, making it more maintainable and consistent across different
views.
Additionally, the `OnelinerDisplay` enum is now used in
`CasePageTemplate` and `MyCasesTemplate` to represent the different
states of the oneliner, improving type safety and clarity.
