feat: indexed access for columns and rows

[lars-reimann]

Summary of Changes

Allow use of columns and rows as receivers of indexed accesses.

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ MARKDOWN	markdown-link-check	3		0	0.74s
✅ REPOSITORY	git_diff	yes		no	0.03s
✅ TYPESCRIPT	eslint	6	0	0	4.8s
✅ TYPESCRIPT	prettier	6	0	0	1.14s

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.69%. Comparing base (ff8fa13) to head (4f39607).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1252   +/-   ##
=======================================
  Coverage   99.68%   99.69%           
=======================================
  Files         110      110           
  Lines       12573    12630   +57     
  Branches     4141     4161   +20     
=======================================
+ Hits        12534    12591   +57     
  Misses         39       39           

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[lars-reimann]

🎉 This PR is included in version 0.20.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• npm package (@latest dist-tag)
• v0.20.0
• GitHub release

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