WIP: BREAKING!: v3

[crookse]

Close #668

General Notes

• Porting to Bun is trivial. See the README for benchmarks. The comparison to Deno is pretty insane; and the Deno Drash version uses URLPattern whereas the Node version (which is what the Bun version uses) uses the old way of handling resource paths. @ebebbington, remember when you added those regex patterns for optional params? Yea... the Bun implementation is using that stuff and it's fast.
• I noticed some slow JS APIs in the Deno version. They are below:
  • Headers
  • URLPattern
• We have "core" code and we have specific runtime code (e.g., src/core and src/node). This is because Node does not fully support the Web APIs (I could be wrong IDK...)
• Oh... and this code is GNU GPL v3 now. Moving forward, we will use GNU GPL v3. This should be the case with all of our stuff.
• Implementations of apps can be found in the benchmarks directory. We have Bun, Deno, and Node apps. Node apps come in ESM and CJS versions.
• @Guergeiro, I tried to follow your chain of responsibility pattern as much as possible, but I diverted to improve speed. The RequestHandler and ResourceHandler classes build their own chains which run in Promise objects. Also, Drash is mostly async -- we return a Promise in most cases so as not to block anything. The only places where we really await are in the services code because those need to be executed in sequential order. Promise.all() will not work here because if you have 5 services for example, then the 5th service could change the response before the 1st service has a chance to act on it.
• I should note some other stuff, but there is a lot going on in this PR. Let's bikeshed. Just kidding. Let's discuss though forreal if you (@ebebbington @Guergeiro @saragee3) have time. No pressure. Bun is still v0.

Node stuff

• I got Node to work, but it required the core code using A LOT of generics. In theory, this is how reusable code should be done, but it doesn't feel quite clean. @Guergeiro, we rely on your expertise in design patterns here :D