TypeScript version/config is out of date

- The TypeScript version should match the one specified in the module template
- Currently there is one TypeScript configuration file, `tsconfig.json`. Instead there should be two, `tsconfig.json` and `tsconfig.build.json`
- `tsup` should be added as a dependency, and `tsup.config.ts` should be copied over
- `package.json` is missing `types`, `module`, and `exports` fields
- The `build` package script should be updated to match the module template, and `build:types` should be copied

Compare package.json and tsconfig.json with the module template, then review the requested tsconfig.build.json, tsup.config.ts, and build scripts. Update the configuration to match the template, including the listed package fields and TypeScript version. Done means the requested files, dependency, scripts, and package metadata all match the template.

Written by the indexing model from the issue text.