feat(examples): Define Ownable and Transferrable Interfaces

[linhpn99]

Relates to #2193

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
• Added new benchmarks to generated graphs, if any. More info here.

[linhpn99]

@moul Temporarily, I am still defining individual error codes for each package. We need to review and consolidate them into a common error code set for all packages

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.81%. Comparing base (dd2d374) to head (26d7f83).
Report is 26 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2198      +/-   ##
==========================================
+ Coverage   60.44%   60.81%   +0.36%     
==========================================
  Files         563      563              
  Lines       75159    75781     +622     
==========================================
+ Hits        45431    46084     +653     
+ Misses      26341    26287      -54     
- Partials     3387     3410      +23     

Flag	Coverage Δ
contribs/gnodev	60.65% <ø> (-0.82%)	⬇️
contribs/gnofaucet	14.46% <ø> (ø)
gno.land	67.17% <ø> (-0.05%)	⬇️
gnovm	65.63% <ø> (+1.17%)	⬆️
misc/genstd	80.54% <ø> (ø)
misc/logos	19.88% <ø> (ø)
tm2	62.05% <ø> (-0.01%)	⬇️

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[linhpn99]

@moul I see you converted it to draft. Do you intend to change something in the master branch?