write_package function is way to opinionated

[ipimpat]

The current implementation of the write_package function in frictionless-r is too restrictive, as it couples the writing of the descriptor file and the resources. This design limits flexibility and adds unnecessary friction to workflows requiring customized output.

Limitations:

1. Hardcoded Descriptor File Name:
   write_package always writes the descriptor file as datapackage.json, without allowing file name customization.

2. No YAML Support:
   Descriptors can only be written in JSON format, personally I prefer YAML over JSON for descriptor files.

3. Resource Path Restrictions:
   Resources are always written to the base directory, with no way to specify custom paths for individual resources.

Proposed Solution:

Refactor the functionality by splitting it into two distinct functions:

1. write_package() - A function responsible only for writing the descriptor file in either JSON or YAML.
2. write_resource() - Export a new function dedicated to writing individual resources.