Add Standard Error Handling for undefined Routes

[pfiadDi]

Hi, great work with this library!
When the user access a route not defined it throws an error from bun server.ts:

Cannot GET /something
λ() node_modules/bunrest/src/server/server.ts:210:16

        // append req route params
        req.params = leaf.routeParams;

        // fix (issue 4: unhandle route did not throw an error)
        if (!handlers || handlers.length === 0) {
          throw new Error(`Cannot ${req.method} ${req.path}`);
          /*   ^ happened here                               */

Stack trace:

  λ() node_modules/bunrest/src/server/server.ts:210:16

Info:

bun v1.0.3
linux #33~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep 7 10:33:52 UTC 2 (x64)
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36
Pathname: /something

While in epxressjs it gives a "nice" standard
Cannot GET /something with a 404

Most importantly, no error in the console and therefore logs.

Would be great if that could be a implemented.

[lau1944]

Added