feat: add token factory module

[byte-bandit]

Related Github tickets

• Token Factory Module VolumeFi/paloma#2440

Background

This change adds a token factory module that extends Paloma with the following features:

• New tokens may be created by anyone
• Tokens can only be minted by the admin of the token (by default, the creator of a token is the admin)
• Tokens can only be burned by the admin of the token
• All data is respected for genesis import/export
• Skyway registrations against user tokens do not require governance
• Tokens can be bridged outside of Paloma
• Creating a token costs 10 GRAIN

Testing completed

Warning

While most of the code is greatly inspired by the COSMWASM tokenfactory module and should be battle tested, I did not have time to include proper e2e tests to cover all Paloma customizations. Successful bridging still needs smoke testing.

• test coverage exists or has been added/updated
• tested in a private testnet

Breaking changes

• I have checked my code for breaking changes
• If there are breaking changes, there is a supporting migration.

[taariq]

LFG