feat: group subscriptions

[lumoswiz]

Single entry point via: redeem(bytes32 id, bytes calldata data)

Three redemption types:

Groups

Internal call: _redeemGroup(bytes32 id)
External calls via multisend

• ERC1155.safeTransferFrom (transfer subscribers tokens to the module)
• IHubV2.groupMint (mint group tokens using subscriber CRC to the module)
• ERC1155.safeTransferFrom (transfer group tokens to the subscriber)

Redeeming occurs via this route if the recipient address is a group address.

Group minting locks tokens from the msg.sender and mints group tokens to the msg.sender, so fairly sure three calls are required in a pull-based setup.

Personal Trusted

• Via operateFlowMatrix

Personal Untrusted

• Via safeTransferFrom

Refactor Notes

• Replaced use of periods with transient storage (T_REDEEMABLE_AMOUNT), set once in redeem using LibTransient
• _redeemGroup, _redeemTrusted, and _redeemUntrusted now consume the redeemable amount from transient storage.
• Explicit clear calls clean up the slot after redemption

[0xpantera]

LGTM