feat: class Account

[freemanzMrojo]

Description

Classes Account and ExternallyOwnedAccount as per the VeChain Data Model. Closes #1104 .

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

I have added tests for every path except for the account type check (to be done once we create the Contract class).

• ExternallyOwnedAccount.unit.test.ts

Test Configuration:

• Node.js Version: 20.12.1
• Yarn Version: 1.22.19

Checklist:

• My code follows the coding standards of this project
• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• New and existing integration tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have not added any vulnerable dependencies to my code

[github-actions]

Test Coverage

Summary

Lines	Statements	Branches	Functions
	99.12% (3640/3672)	97.14% (953/981)	99.18% (728/734)

Title	Tests	Skipped	Failures	Errors	Time
core	542	0 💤	0 ❌	0 🔥	1m 9s ⏱️
network	684	0 💤	0 ❌	0 🔥	3m 47s ⏱️
errors	40	0 💤	0 ❌	0 🔥	13.537s ⏱️

[rodolfopietro97]

LGTM. Great work @freemanzMrojo 💪
Only 1 little feed related to TODO