feat(examples): mirror realm

[leohhhn]

Description

Adds the mirror realm.

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.78%. Comparing base (1e2929b) to head (a7aa0e9).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3156      +/-   ##
==========================================
- Coverage   63.81%   63.78%   -0.04%     
==========================================
  Files         549      549              
  Lines       78833    78833              
==========================================
- Hits        50308    50282      -26     
- Misses      25136    25158      +22     
- Partials     3389     3393       +4     

Flag	Coverage Δ
contribs/gnodev	61.16% <ø> (ø)
contribs/gnofaucet	14.82% <ø> (-0.95%)	⬇️
gno.land	73.70% <ø> (ø)
gnovm	67.94% <ø> (ø)
misc/genstd	79.72% <ø> (ø)
tm2	62.28% <ø> (-0.15%)	⬇️

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[ltzmaxwell]

this can reflect recursively like two mirrors infinitely, right?

[moul]

clever :)

[leohhhn]

@ltzmaxwell

Yep, but since you cannot pass in an argument to the Render function that was registered, it will not go into deep recursion

@moul

Idea was @jeronimoalbi's, all credits to him