Latest Zmpl provides `template.renderWithLayout(other_template, data)`,
allowing a template to be renedered within another template.
Create layouts in `src/app/views/layouts/` or use
`jetzig generate layout [name]` and set `pub const layout = "name";` in
each view file.
Views are copied to zig-cache, meaning that any files in `src/` are not
available for `@import` by default. Copy all .zig files from `src/` into
zig-cache so that relative imports work as expected. This also removes
the need to specifically copy views into zig-cache as the full tree is
now present.
Also fix a bug in static route fallback - remove superfluous underscore
so static routes with non-matching params render default HTML/JSON
content.
Allow custom functions with arbitrary signatures and avoid any issues of
trying to parse functions that are not Jeztig route action functions
(i.e. index, get, post, put, patch, delete).
Implement `jetzig.http.Request.params()` which parses either a JSON
request body or a query param string into a `jetzig.data.Value`.
Allow configuring params for static site generation - configure an array
of params for each endpoint which is then parsed at build time and a
separate JSON and HTML output is generated for each by invoking the
relevant view function and passing in resource ID/params. Params are
stored in generated `routes.zig` for route matching at run time.
Generate views defined with `request: *jetzig.http.StaticRequest` as
static content into `static/` directory so that exported JSON and HTML
can be rendered direct from disk, skipping runtime rendering.
