Fix: Show compile errors and enforce node.js version to permit optional chaining

[rpocklin]

Description

Looks like the logging for potential errors got commented out somehow in the v9.0.0 release.

Current (introducing a compile-time error intentionally)

  Design System build failed with errors.

error Command failed with exit code 1.

With Fix

ERROR in ./src/components/OcRecipient/OcRecipient.vue?vue&type=style&index=0&lang=scss& (./node_modules/mini-css-extract-plugin/dist/loader.js!./node_modules/css-loader/dist/cjs.js??ref--10-1!./node_modules/vue-loader/lib/loaders/stylePostLoader.js!./node_modules/postcss-loader/src??ref--10-2!./node_modules/sass-loader/dist/cjs.js??ref--10-3!./node_modules/sass-resources-loader/lib/loader.js??ref--10-4!./node_modules/vue-loader/lib??vue-loader-options!./src/components/OcRecipient/OcRecipient.vue?vue&type=style&index=0&lang=scss&)
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/sass-loader/dist/cjs.js):
SassError: expected ";".
   ╷
13 │     text-indent: -9999px;
...

Also, the build/build-tokens/format.js code uses optional chaining, introduced in Node.js v14.0.0 so I set this in the package.json engines configuration to enforce this version (or greater) of Node.js to be used.

Current (running with Node.js v12.22.1 intentionally)

/home/user/owncloud-design-system/build/build-tokens/format.js:5
  if (dictionary.file.report?.colorContrast) {
                             ^

SyntaxError: Unexpected token '.'
    at wrapSafe (internal/modules/cjs/loader.js:915:16)
    at Module._compile (internal/modules/cjs/loader.js:963:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Module.require (internal/modules/cjs/loader.js:887:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (/home/user/owncloud-design-system/build/build-tokens/format-writer-json.js:3:22)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)```

With Fix

error owncloud-design-system@9.0.0: The engine "node" is incompatible with this module. Expected version ">= 14.0.0". Got "12.22.1"
error Commands cannot run with an incompatible environment.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

81.1% Coverage
3.0% Duplication