Pairing report

Bundling all the bugs, itchy sweaters, & feature requests we found up here:

- [ ] APP_MIDDLEWARE needs to be exported due to a regression (I believe! I had us carefully tip-toe around this one)
- [ ] `npm init boltzmann --typescript` ignores the typescript flag for some reason
- [ ] There's not really a clear story for moving from Boltzmann JS -> TS in a project (manually rename files, make sure we change `require` to `import` because it affects how types are resolved)
- [ ] The remnants of templating are itchy (```void ``;```, empty line comments a la `// `)
- [ ] Requests for interfaces in addition to types (`IContext` vs just `Context`); dig into this more
- [ ] Typescript `npm run boltzmann:routes` runscript needs `TS_NODE_FILES=true`.
- [ ] Request to scaffold at different dir levels (`src/` or `lib/`) – putting everything at top-level is an itchy sweater