* Add optional static_dir support
- add optional application.static_dir field defaulting to none
- copy configured static directory into web output during build/serve
- document config knob and add unit tests
- force full rebuild when static_dir contents change
- sync removes stale outputs and logs copy activity
- track static manifest next to platform dir
Tests: cargo fmt
* default to public dir to match vite
* static_dir -> public_dir
* wip
* deser as none...
* wip... use .manifest.json
* implement dumb form of asset manifest generation
* implement manifest using asset system directly
* cleanup
* dont create extra asset dir for server
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Co-authored-by: Evan Almloff <evanalmloff@gmail.com>
Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>
