Add helper functions to struct types and Eq implementations for all types

[bitzoic]

Type of change

• New feature

Changes

The following changes have been made:

• Adds struct field getters, new(), and Eq implementation to SRC-10's DepositMessage
• Adds struct field getters, new(), and Eq implementation to SRC-10's MetadataMessage
• Adds check functions and Eq implementation to SRC-10's DepositType
• Adds struct field getters, new(), and Eq implementation to SRC-11's SecurityInformation
• Adds struct field getters, new(), log(), and Eq implementation to SRC-20's SetNameEvent
• Adds struct field getters, new(), log(), and Eq implementation to SRC-20's SetSymbolEvent
• Adds struct field getters, new(), log(), and Eq implementation to SRC-20's SetDecimalsEvent
• Adds struct field getters, new(), log(), and Eq implementation to SRC-20's TotalSupplyEvent
• Adds Eq implementation to SRC-5's AccessError
• Adds check functions and Eq implementation to SRC-5's State
• Adds struct field getters, new(), log(), and Eq implementation to SRC-6's Deposit
• Adds struct field getters, new(), log(), and Eq implementation to SRC-6's Withdraw
• Adds struct field getters, new(), log(), and Eq implementation to SRC-7's SetMetadataEvent

Notes

• The SRC-7 Metadata type's helper functions are in Sway-Libs

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.
• I have updated the changelog to reflect the changes on this PR.