feat(resource): adds http resources for package archives

[dgkf]

Allows for pkgs to come from remote sources such as a CRAN pkg source url (https://cran.r-project.org/src/contrib/praise_1.0.0.tar.gz)

To make use of this, the default policy needs to be configured to allow this new type and a few permissions have to be enabled:

options(val.meter.policy = policy(
  source_resources = list(cran_repo_resource, repo_resource, http_resource), 
  permissions = TRUE  # at least "write", "network" to download and save to disk
))

pkg <- pkg("https://cran.r-project.org/src/contrib/praise_1.0.0.tar.gz")
pkg@resource

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 31.08%. Comparing base (c4d4e59) to head (f79fa09).

Files with missing lines	Patch %	Lines
R/class_resource.R	0.00%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #54      +/-   ##
==========================================
- Coverage   31.31%   31.08%   -0.24%     
==========================================
  Files          36       36              
  Lines        1587     1599      +12     
==========================================
  Hits          497      497              
- Misses       1090     1102      +12     

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