Use Karl Seguin's http.zig as HTTP server backend:
https://github.com/karlseguin/http.zig
Update loggers to use new `jetzig.loggers.LogQueue` to offload logging
to a background thread.
Numerous other optimizations to remove unneeded allocs.
Performance jump on a simple request from approx. 2k requests/second to
approx. 40k requests/second (Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz).
Color support for Windows
Zmpl partial arg type coercion
Create mailers with `jetzig generate mailer <name>`. Mailers define
default values for email fields (e.g. subject, from address, etc.).
Mailers use Zmpl for rendering text/HTML parts.
Send an email from a request with `request.mail()`. Call
`deliver(.background, .{})` on the return value to use the built-in
mail job to send the email asynchronously.
Improve query/HTTP request body param parsing - unescape `+` and `%XX`
characters.
Use in-memory KV store (JetKV) for simple job queue.
Build script generates an array of Zig modules in `src/app/jobs/` and
stores their name + run function (`run(allocator, params, logger)`).
View functions schedule jobs with arbitrary params.
Thread pool spawns a (configurable) number of workers and pops jobs from
the queue, then invokes the appropriate run function.
Runs a development server and auto-reloads when changes are detected to
files.
Note that a "change" is just an mtime update, Zig does a more
intelligent change detection so avoids unnecessary recompiles, so the
server reloads very quickly.
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.
Offload as much work as possible into new `jetzigInit` function provided
by Jetzig's `build.zig`. This means that a new Jetzig project's
`build.zig` is now almost completely vanilla with the exception of two
extra lines:
```zig
const jetzig = @import("jetzig");
```
```zig
try jetzig.jetzigInit(b, exe, .{});
```
Remove old bash script for setting up a new project, do everything in
Zig to make it platform agnostic and give us an easy place to add
scaffolding commands in future.
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.
