Add support for struct Routes

[arctic-hen7]

This solves a problem I had with Sycamore last year: that Route can only be an enum, meaning additional custom information can't be easily attached to the router system. Perseus required this, and did a very hacky workaround that both reduced routing performance there and made for some really weird semantics. With framesurge/perseus#151 though, that workaround it no longer feasible, so this makes Route be able to be a struct, and match_route now takes &self.

To achieve this, I've broken out the Router into a Router and a RouterBase, with the former being a wrapper around the latter that simply calls it with R::default(), which is now derived automatically in enums as the #[not_found] route. All tests pass, and I'm pretty sure I've covered everything, but a review to make sure I haven't missed something would be greatly appreciated!

I haven't done anything with StaticRouter, which already takes a specific Route instance. RouterBase now mimics that, and Router just abstracts over it (meaning this isn't a breaking change).

Closes #244.

[codecov]

Codecov Report

Merging #434 (8569b17) into master (215a015) will decrease coverage by 0.21%.
The diff coverage is 65.21%.

@@            Coverage Diff             @@
##           master     #434      +/-   ##
==========================================
- Coverage   64.97%   64.75%   -0.22%     
==========================================
  Files          52       52              
  Lines        8268     8385     +117     
==========================================
+ Hits         5372     5430      +58     
- Misses       2896     2955      +59     

Impacted Files	Coverage Δ
packages/sycamore-router/src/router.rs	25.17% <9.09%> (-1.83%)	⬇️
packages/sycamore-router/src/lib.rs	96.95% <95.74%> (+0.18%)	⬆️
packages/sycamore-router-macro/src/route.rs	89.76% <100.00%> (+0.34%)	⬆️
packages/sycamore-web/src/lib.rs	2.38% <0.00%> (-1.33%)	⬇️
packages/sycamore/src/builder.rs	21.93% <0.00%> (-1.18%)	⬇️
packages/sycamore-macro/src/view/ir.rs	100.00% <0.00%> (ø)
packages/sycamore-macro/src/view/parse.rs	96.89% <0.00%> (+0.08%)	⬆️
packages/sycamore-macro/src/view/codegen.rs	97.34% <0.00%> (+1.12%)	⬆️

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[arctic-hen7]

Note that only Cloneable data will be able to be stored in the Route right now, since it takes &self rather than self. if it takes the latter though, that stuffs up some lifetimes in another part of the code, which I'm not completely sure how to quickly fix. For my purposes, this is fine, but it might be worth revisiting in future.

[lukechu10]

Sorry don't have time for a full review right now. I'll try to get to this soon.

[arctic-hen7]

No problem, Perseus can run off my fork in the meantime.

[arctic-hen7]

@lukechu10, would it be possible to merge this fairly soon and get a new beta release out? I'd like to make a new release of Perseus fairly soon to field test the removal of .perseus/, which depends on this.

[lukechu10]

Sorry for taking so long to get to this. I'm planning to do a refactor of the router API for the final 0.8 release but I'll merge this in for now to unblock you.

[lukechu10]

Released v0.8.0-beta.7!