chore(zkgm): virtualize tokenfactory

[aeryz]

Intended behaviour:

1. transfer:
   a. Minter is TF, sent wrapped token: Call TokenFactoryMsg::BurnFrom -> tf minter checks whether the funds are provided and burns.
   b. Minter is CW20, sent wrapped token: Call TokenFactoryMsg::BurnFrom -> cw20 minter just burns the tokens.
   c. Minter is TF, sent native token: Call LocalTokenMsg::TakeFunds -> tf minter checks whether the funds are provided and noops.
   d. Minter is CW20, sent CW20: Call LocalTokenMsg::TakeFunds -> cw20 minter calls CW20::TransferFrom
   e. Minter is CW20, sent native token: Call LocalTokenMsg::TakeFunds -> cw20 minter sees funds are provided, saves the given denom as native and noops.

2. recv_transfer:
   a. Minter is TF: Nothing fancy, just delegate the messages to TF.
   b. Minter is CW20, need to create a wrapped token:
   1. Call TokenFactoryMsg::CreateDenom: Since CW20 doesn't have the token info yet, it just noops.
   2. Call TokenFactoryMsg::SetDenomMetadata: CW20 now has the token info, so it instantiates a contract. To save the denom to the denom to addr mapping, it saves the denom to DENOM_TO_BE_STORED. NOTE THAT THIS IS A SINGLE VALUE STORAGE.
   3. Step 2 results in reply if success, in the reply, read DENOM_TO_BE_STORED and save denom and addr to DENOM_TO_ADDR mapping.
   4. Call TokenFactoryMsg::MintTokens: Read from DENOM_TO_ADDR mapping and mint the tokens.

   c. Minter is CW20, need to unescrow local token: CW20 just calls CW20::Transfer
   d. Minter is CW20, need to unescrow native token: CW20 sees that the given denom previously been saved as a native token. So it calls BankMsg::Send.

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[benluelo]

cool