ctx.data and ctx.assets are not populated by the config

[BPR02]

In the beet_default of a custom plugin, the config values for data_pack and resource_pack are not inserted into the ctx.data and ctx.assets fields respectively. The config values are currently not available except for the internal plugin that generates the output (i.e. the pack.mcmeta file).

Example:

beet.yaml

data_pack:
  name: My Data Pack
  description: a data pack
  load: src
  pack_format: 6
  supported_formats: [0,6]

pipeline:
  - custom_plugin

custom_plugin.py

def beet_default(ctx: Context):
  print(ctx.data.name)
  print(ctx.data.description)
  print(ctx.data.pack_format)
  print(ctx.data.supported_formats)

Result
This will print out the following (i.e. the default values):

None

48
None

Expected
The values should return the value set in the config:

My Data Pack
a data pack
6
[0, 6]