Old fields with colons in API ID path not supported

The tool generates invalid syntax when the Prismic repository contains invalid API ID Paths.

Historically, it was possible to create a field with the API ID Path including colon characters, e.g. general::banners.

(The project I am working on has many, many legacy fields using this syntax, for better or worse. Updating them all is not viable, as it would require broad code changes.)

Versions

prismic-ts-codegen: 0.1.5
node: 18.14.1

Reproduction

It is no longer possible to create fields with : in the name anymore, so a new test case cannot be produced.

Steps to reproduce

Start with an old prismic repository, containing models with fields whose API ID contain colon characters, e.g. general::banners
Setup the code generation according to the documentation, using PRISMIC_CUSTOM_TYPES_API_TOKEN to generate from the repository
Run the cli tool

What is expected?

Valid TypeScript type defintiions, where fields containing colons are escaped as strings, e.g.

"general::banners": prismicT.GroupField<Simplify<GlobalContentDocumentDataGeneralBannersItem>>;

What is actually happening?

Invalid syntax is generated, as these keys are not safely escaped.

/**
 * Visible banners field in *Global Content*
 *
 * - **Field Type**: Group
 * - **Placeholder**: *None*
 * - **API ID Path**: global_content."general::banners"[]
 * - **Tab**: General
 * - **Documentation**: https://prismic.io/docs/core-concepts/group
 *
 */
general: ;
banners: prismicT.GroupField<Simplify<GlobalContentDocumentDataGeneralBannersItem>>;

prismicio / prismic-ts-codegen