Unify staking files

[tomasklim]

Right now utils and types are all over suite in many files.

Please unify as much as possible.

There is stake.ts utils file in packages/suite There is stake.ts utils file in @suite-common/suite-utils Then there is stakingUtils.ts in @suite-common/wallet-utils

There is stake.ts utils file in @suite-common/wallet-types There is stakeTypes.ts utils file in @suite-common/wallet-core

• there are also values which are definitely not types in this file. Maybe should be in file ethStaking.ts

The file with constants ethStaking.ts is also hard to find, please come up with better naming

Please do some kind of cleaning and organising so that it is easy to find what we are looking for.

[omykhailovskyi]

Please add acceptance criteria, as discussed