Replace id with $id from schema.json.

[sarpaykent]

Fixes eulerrapp/nx-python#43

• Please check if the PR fulfills these requirements

• [x] The commit message is clear and concise
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs/Readme have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) Updates id to $id in schema file for compatibiliity with @angular-devkit/[email protected].

• What is the current behavior? (You can also link to an open issue here) As shown in #43 generator fails when @angular-devkit/core is installed with version 13 or higher.

• What is the new behavior (if this is a feature change)?

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?) No

• Other information: