Request: Mooaarr tokens, mooaarr IBC connections

[Gavin]

[Proposal] Add Support for USDC, USDY, UM, NYM, NTRN

Following a productive round of community discussion and feedback [here], I think it makes sense to move forward with the next set of asset integrations for Namada. The goal is to continue building the MASP’s utility and reach, while balancing ease of integration with ecosystem alignment. Assets Selected for Integration We propose to add support for the following assets: USDC (via Noble), USDY (via Noble), UM (Penumbra DEX), NYM (Nym mixnet), NTRN (Neutron). These assets were selected based o…