Allow usage of Core Contract names for flow deps add

[jribbink]

Closes #1753

Description

---

For contributor use:

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 68.96552% with 9 lines in your changes missing coverage. Please review.

Project coverage is 29.75%. Comparing base (ff212fb) to head (1fb224f).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/dependencymanager/add.go	0.00%	5 Missing ⚠️
internal/dependencymanager/dependencyinstaller.go	83.33%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1758      +/-   ##
==========================================
+ Coverage   29.54%   29.75%   +0.20%     
==========================================
  Files          88       88              
  Lines        5154     5176      +22     
==========================================
+ Hits         1523     1540      +17     
- Misses       3444     3449       +5     
  Partials      187      187              

Flag	Coverage Δ
unittests	29.75% <68.96%> (+0.20%)	⬆️

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