Support deno

[metrue]

I am trying following test,

import { EdgeQL, Context } from 'npm:edgeql';

const app = new EdgeQL()

app.handle(`
type Query {
  hello: String
}
`, (ctx: Context) => {
    return 'hello from EdgeQL on Deno'
})

Deno.serve((req: Request) => {
  return app.fetch(req)
})

but getting following errors

error: 'import', and 'export' cannot be used outside of module code at file:///Users/minhuang/Codes/EdgeQL/examples/deno/node_modules/.deno/edgeql@0.1.3/node_modules/edgeql/dist/esm/index.js:1:1

  export { EdgeQL } from './app';
  ~~~~~~
```

[metrue]

After add type to package.json of Edge, now the error is different, but still related to module resolution.

error: Could not resolve './app' from 'file:///.../node_modules/.deno/edgeql@0.1.4/node_modules/edgeql/dist/esm/index.js'.

Caused by:
    [ERR_MODULE_NOT_FOUND] Cannot find module "file:///..../node_modules/.deno/edgeql@0.1.4/node_modules/edgeql/dist/esm/app" imported from "file:///..../node_modules/.deno/edgeql@0.1.4/node_modules/edgeql/dist/esm/index.js"