Added functions for adding and updating text resources in an AGOL item

[MikeTschudi]

Added

• addTextResource()
• updateTextResource()

Renamed

• addResourceFromBlob() → addBlobResource()
• add-resource-from-blob.ts → add-resource.ts

Created

• update-resource.ts

In short, because the PR's diff is muddled, there are two modified/new files:

• add-resource.ts
  • addBlobResource()
  • addTextResource()
• update-resource.ts
  • updateTextResource()

and affiliated tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (4924f04) to head (2d4086b).
Report is 6 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop     #1509   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          152       153    +1     
  Lines         8168      8188   +20     
  Branches      1805      1809    +4     
=========================================
+ Hits          8168      8188   +20     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.