Version 1.0.0

API feels like it should remain pretty stable, so bumping to v1.0.0

Changes in this version:

• Uses @types/chrome for type definitions
• Adds support for deno.json as import_map.json (although it does create a lot of warnings...)
• Adds --watch, so we can differentiate between 1-time builds
• Migrates https://github.com/bpevs/bext_examples into this repo