feat(examples): Implement a two-player Dice Roller game

[linhpn99]

Description:

This PR introduces a basic dice rolling game : Dice Roller

Game Rules:

1. Two players each roll a dice once
2. Each roll results in a value between 1 and 6
3. The player with the highest score will win the game
4. If both players roll the same value, the game is a draw
5. No points or stats changes are awarded if you play against yourself

Purpose:

• This package serves to illustrate the application of on-chain randomness using Gno's p/demo/entropy and rand/math packages. While these packages provide randomness, they are not entirely unpredictable, and their usage in this game is intended to showcase their practical implementation in Gno's realms
• Designed with a minimalistic realm to ensure ease of understanding and accessibility for newcomers to Gno realm development

You guys can test this game at : https://test4.gno.land/r/g1w6886hdj2tet0seyw6kn8fl92sx06prgd9w9j8/game/v3/diceroller

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.44%. Comparing base (f04ec89) to head (5b7d632).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2768   +/-   ##
=======================================
  Coverage   60.44%   60.44%           
=======================================
  Files         563      563           
  Lines       75159    75159           
=======================================
+ Hits        45427    45432    +5     
+ Misses      26343    26340    -3     
+ Partials     3389     3387    -2     

Flag	Coverage Δ
contribs/gnodev	61.46% <ø> (ø)
contribs/gnofaucet	15.31% <ø> (ø)
gno.land	67.21% <ø> (ø)
gnovm	64.46% <ø> (ø)
misc/genstd	80.54% <ø> (ø)
misc/logos	19.88% <ø> (ø)
tm2	61.98% <ø> (-0.08%)	⬇️

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[linhpn99]

@leohhhn cound u take a look

[leohhhn]

#2333 (comment)