feat: batch tx to pay fees when unshielding

[mateuszjasiuk]

Resolves #2207

TODO:

• unshield correct amount of gas
• check if we can make batch atomic
• check why shielded context invalidates after successful tx
• fix toast
• check history
• add ledger check(test ledger without check first)
• wait for namada_sdk change and implement
• use the same logic for shielded transfers
• merge details tiles

How to test?

• try to unshield/shielded transfer with the regular account - try to use many notes > 6 or sth(you will need to bump the gas)
• try to unshield/shielded transfer with the ledger - to see jf this change did not break ledger logic
• try shielding/unshielding/shielded transfers with and without ledger to see if details in extension are correct(tx name, from...to, etc.)