feat: add support for the pesde package manager

This PR changes quite a bit, to go over the larger details: 1. Remove the use of aliases 2. Implement bundling + type support within the bundling for the Api Types package. 3. Use Pesde's workspace feature 4. Adopt Pesde as Discord-Luau's package manager 5. Implement an entrypoint into each package. 6. Implement a `script` framework, just to have a clear distinction between whats just a temporary get stuff done quickly script, vs's a genuine script, such as one used in the Ci 7. Migrate the /test folder into their respective packages. 8. Remove the Vendor folder 9. Refactor `future` library -> `async` library. Quirks, things I don't like atm: - buffer isn't really a buffer, buffer is more like a string stream, should this be renamed? - core is an odd name - should we call this something else? or is this fine..