@nx/js:tsc add paramter to remove package.json fields

[Thomas-Haider]

We currently have the issue that we would like to ship a clean package.json to our library users. However, this is as of now quite a pain to implement as no matter what solution we find, it never works with things like the watch mode.

Therefore, I would expect to have a new property which is called sth like removePackageJsonFields and is of type string[]. This will allow users to specify a list of fields in the package.json which should be removed for the built package.

Example:

{
  "name": "some-platform-tools",
  "targets": {
    "build": {
      "executor": "@nx/js:tsc",
      "cache": false,
      "options": {
        "outputPath": "packages/tools/dist",
        "main": "packages/tools/index.ts",
        "tsConfig": "packages/tools/tsconfig.json",
        "parallel": true,
        "transformers": [
          {
            "name": "typescript-transform-paths/nx-transformer"
          }
        ],
        "removePackageJsonFields": [
          "publishConfig",
          "devDependencies",
           "scripts"
        ]
      }
    },
  }
}

FYI, I wouldn't mind contributing to the repo myself if that is required.