Use attributes

[peterdesmet]

Why attributes

We are changing to an attributes so it is easier to separate:

• properties: things that are included in the datapackage.json list
• attributes: things that the frictionless functions have added to pass objects from one function to the next

Data frames do the same: attributes(iris)

We still remove all attributes in write_package (write_resource), so that the invisibly returned package is as written to disk

Affected properties

• package$directory to attr(package, "directory")
• resource$read_from to attr(resource, "data_location")

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (97f91a2) to head (b887ac3).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #289   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines          650       658    +8     
=========================================
+ Hits           650       658    +8     

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