Sol Stake: Discover and show Solana staking accounts

[jirih-stsh]

User Story

As a Solana user I want to see all the staking accounts attached to my Solana account, So that I can see how much SOL I have staked across all delegators

Requirements

• do discovery
• add Staking tab in Solana under debug mode
• show Staking in sidebar and on dashboard in assets
• we should visually differentiate which staking accounts are delegated to Everstake
• TBD - Design is needed ❗
  • need to design how multiple staking accounts show up in the staking tab (eth has only 1 staking balance)
  • in the sidebar we should show only one total sum of staked amount across all accounts

Acceptance criteria

• The staking tab in Solana displays all staking accounts attached to the Sol account
• Each staking account displays the staked amount

[omykhailovskyi]

Alex to check and provide some references