- Adds cli option `--config=./deno.json`
- Adds support for workspaces

- adds `--config` cli arg

- relocates the plugin deno.json to source/deno.json

- uses @duesabati/esbuild-deno-plugin instead of @Luca

- update workflow to use deno 2

- only copy static dir if existing
- only copy existing source files
- allow for using any combination of js/ts/jsx/tsx
- add barebones example
- adjust preact meta to distinguish from barebones

Allows for passing custom build target locations

since esbuild-deno-plugin also will check the import part in deno.json,
so this path is also needed

updates dependencies to fix workflow error

basically replay https://github.com/bpevs/deno_web_extension_starter/pull/2