)

closes: #10249

## Description

This PR allows ICS-20 fungible token transfer packets to contain inbound receiver and outbound sender addresses formatted as either:
- a standard bech32 address (`"agoric1bech32addr"`), or
- a base account with optional subpaths and query parameters (`"agoric1bech32addr/opt/account?k=v&k2=v2"`)

In these cases, the "base address" is `"agoric1bech32addr"`, and tokens are transferred to that base address.  The original address can be parsed by a listening contract into "address parameters" to use at its discretion.

### Security Considerations

Should be no impact.  If a transfer listener does not explicitly look for the data in an inbound packet, it will behave as if there are no address parameters.

Careful review of the code is critical, though, since it touches the powerful `x/vtransfer` module.

### Scaling Considerations

Increases the scalability of contracts that would ordinarily have to maintain a pool of multiple Local Chain Account (LCA) addresses to have a unique ID to map to some parameters.  Now, contracts can create just one LCA and have the sender supply the data as part of a parameterized address.

The ICS-20 transfer addresses are strings limited to at most [2048 bytes, and potentially even smaller if explicitly configured](informalsystems/hermes#3765 (comment)) by a relayer operator.  Thus, the total length of the encoded base address and all the address parameters cannot exceed that address string limit, or the packet will not be forwarded.

### Documentation Considerations

Should be documented as a feature of `vtransfer`.

### Testing Considerations

Unit tests with address parameter data tests have been implemented, testing both the address parser code and the IBC end-to-end packet relay process through the `x/vtransfer` module.

### Upgrade Considerations

This is a chain-level, backwards-compatible change, so no upgrade aspects must be addressed.  However, Agoric contracts will probably need to import an URL-parsing module to parse URL escaping and query parameters syntax (since the `globalThis.URL` constructor is not currently available in the SwingSet vat environment).