Include from nimble files is fragile

[Nycto]

The way that playdate-nim currently integrates with Nimble by adding an include to the consumers nimble files is very fragile. It causes a few problems:

• Reports of the language server being broken (LSP error with VSCode and config.nims file #89)
• Requires running nimble install playdate before running a build. This is a break from the regular nimble process
• When it fails, it causes confusing error messages
• Makes development on this library hard, as running nimble install playdate installs the latest version, not the in development version. This means the build scripts are on the previous version
• Apparently, it doesn't work with nimble lock, though I didn't test this too hard

We need to find another way of dealing with this.

One possible mechanism would be to vend a bin that wraps nimble. So instead of calling nimble simulate, folks would call pdbuild simulate. We could then strive to make all existing nimble commands work as expected, so folks would only interact with pdbuild when performing playdate specific actions.

Other ideas and possible solutions are welcome

[Nycto]

Resolving, as the pdn build command landed in the dev branch