build: don't rely on folder layout; adopt best practice

[blaggacao]

Blocks: https://github.com/blaggacao/frappix/pull/11

drive on  build/use-workspaces via  v18.20.4 via 🐍 v3.11.8 (pyenv) took 8s
❯ yarn build
yarn run v1.22.22
$ cd frontend && npm run build

> frontend@0.0.0 build
> vite build --base=/assets/drive/frontend/ && yarn copy-html-entry

✘ [ERROR] No matching export in "../../../.data/sites/common_site_config.json" for import "webserver_port"

    vite.config.js:4:9:
      4 │ import { webserver_port } from "../../../sites/common_site_config.json"
        ╵          ~~~~~~~~~~~~~~

failed to load config from /home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/frontend/vite.config.js
error during build:
Error: Build failed with 1 error:
vite.config.js:4:9: ERROR: No matching export in "../../../.data/sites/common_site_config.json" for import "webserver_port"
    at failureErrorWithLog (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:1649:15)
    at /home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:1058:25
    at runOnEndCallbacks (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:1484:45)
    at buildResponseToResult (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:1056:7)
    at /home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:1085:16
    at responseCallbacks.<computed> (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:703:9)
    at handleIncomingPacket (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:762:9)
    at Socket.readFromStdout (/home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/node_modules/esbuild/lib/main.js:679:7)
    at Socket.emit (node:events:519:28)
    at addChunk (node:internal/streams/readable:559:12)
npm error Lifecycle script `build` failed with error:
npm error Error: command failed
npm error   in workspace: frontend@0.0.0
npm error   at location: /home/blaggacao/src/gitlab.com/pristina/infraestructura/apps/drive/frontend

[blaggacao]

@uhrjun hi, could you help with this, as well, in order to unblock https://github.com/blaggacao/frappix/pull/11 ?

[uhrjun]

Will just merge this instead https://github.com/frappe/drive/commit/363b878ba2019d8fc6bca08fcaee29466a381dfe.

[blaggacao]

Thanks a lot!