feat: remove x/authz dependency from precompiles

[cloudgray]

Description

Removal of x/authz dependency on precompiles

• Remove authzKeeper dependency from common Precompile struct
• For staking and ics20 precompile
  • remove authorization methods (Approve, Revoke, IncreaseAllowance, DecreaseAllowance, Allowance) and its usage.
• For erc20 precompile
  • Add Allowance state CRUD methods in x/erc20 module
  • Use added Allowance state of x/erc20 module instead of Grant state of x/authz module for authorization methods (Approve, Revoke, IncreaseAllowance, DecreaseAllowance, Allowance)

Closes: #47

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[dongsam]

In the arguments of NewAvailableStaticPrecompiles, it also seems possible to remove authzKeeper.

Additionally, I noticed that dependencies on Erc20Keeper, werc20 and erc20 precompiles (which are planned to be removed later as they will have their own state) still remain, so I’m leaving a note just in case it was overlooked.

FYI: temporary removed for IBC v2 test on this commit

[cloudgray]

Thank you for feedback.

1. In case of NewAvailableStaticPrecompiles, I missed it, I'll fix it.
2. In case of erc20 and werc20, I intended that the task order that 1) add allowance state in x/erc20 module, 2) modify erc20 precompile, 3) modify werc20 precompile.
3. And I will consider commit.