Set profile to "tabular-data-package" when creating package

[peterdesmet]

Added resources will make the Data Package meet Tabular Data Package requirements, so profile is set to tabular-data-package. The property is not a requirement for check_package() (as incoming packages might not have it).

Setting profile makes for stronger validation for downstream users.

[codecov]

Codecov Report

Merging #81 (7f1f237) into main (f36b17f) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 7f1f237 differs from pull request most recent head 45cc810. Consider uploading reports for the commit 45cc810 to get more accurate results

@@            Coverage Diff            @@
##              main       #81   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          418       419    +1     
=========================================
+ Hits           418       419    +1     

Impacted Files	Coverage Δ
R/create_package.R	100.00% <100.00%> (ø)

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