Add option to avoid hoisting transitive imports

[lukastaegert]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:
Resolves #3062

Description

This will add an output option hoistTransitiveImports that can be set to false to avoid hoisting imports of chunk dependencies into entry chunks as "empty" imports. Also adds some documentation as to why this happens by default.

[codecov]

Codecov Report

Merging #3353 into master will increase coverage by 0.02%.
The diff coverage is 98.38%.

@@            Coverage Diff             @@
##           master    #3353      +/-   ##
==========================================
+ Coverage   93.23%   93.26%   +0.02%     
==========================================
  Files         172      172              
  Lines        6048     6072      +24     
  Branches     1804     1809       +5     
==========================================
+ Hits         5639     5663      +24     
  Misses        218      218              
  Partials      191      191

Impacted Files	Coverage Δ
src/utils/entryHashing.ts	100% <100%> (ø)	⬆️
src/utils/chunkColouring.ts	98.36% <98.33%> (+1.06%)	⬆️

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