Fix clippy::too_many_arguments and rework error ..

... page rendering

Too many arguments are moved around and many of them are already stored
in MiniserveConfig. Many of these are used to render error pages.

To fix this issue, it was necessary to rework error page rendering:

1. Implement `ResponseError` for `ContextualError` so that it can be
   returned from service handlers as is and will then be automatically
   logged to the console and converted into an error response.

2. At service handler level, all error responses are now rendered as
   plain text.

3. 'error_page_middleware' is now responsible for the rendering of the
   final error page from plain text reponses.

Signed-off-by: Ali MJ Al-Nasrawy <alimjalnasrawy@gmail.com>

0 files changed, 0 insertions, 0 deletions