Public testnet release tasks

[jurevans]

Documenting the tasks that should be in place for a public testnet release of the interface and extension here (some are already split into individual tasks, but we can use this issue to track overall progress)

Existing issues:

• [Bug] Ledger Reveal PK TX Rejection/Error does not break flow #353 Ledger error/rejection handling improvements
• Interface: Staking balance updates #354 Fix issues related to updating staking balances
• Extension Auth Improvements #366 Redirect to Login if service worker goes inactive during AddAccount (mnemonic accounts only)
• [BUG] Interface should validate bech32 addresses #371 Must fix this issue with bech32 address validation!
• Extension storage should be guaranteed durable #349 Extension storage durability
• Faucet transfers from extension #347 Faucet transfers for testnet extension (we can provide a faucet address in the deployment variables to determine if we display a faucet transfer form)
• Extension: Connection Approval #200 Implement connection approval (this is pretty straightforward, but not as important as other issues in here)
• Better handling of service worker / extension disconnects #356 Calls to service worker when service worker has shut down (Chrome) are still flaky in places - user shouldn't have to refresh (see useUntil and executeUntil) - This affects both functionality inside extension, in addition to the interface (approval launches can fail, and initial connection can fail if the service worker has shut down)
• Generic notification events and toast #358 Generic notifications - these should be consistent among each transaction type (including Ledger), where notification events are dispatched via the extension for feedback within the interface once the submission process begins
• CI updates to deploy interface and build extension assets #357 NOTE This would be nice if we could pull it off, but we should probably wait for Gianmarco to handle infrastructure-related tasks, as it would be beneficial to get this better integrated with Namada releases
• chore: update namada to draft/0.22 #360 Update to v0.21.x - support Multisig changes in SDK
  • This is ready as soon as we can point to 0.21.2 (once fix from Tomas in "testing" feature guard masp proofs load/save namada#1828 is merged and released, as well as when the Ledger app supports 0.21.x tx)
  • Update to v0.22.x - if needed, incorporate any changes in SDK
• IBC - Hook up to Ledger & Approvals #374 IBC transfers should be hooked up to approvals & Ledger

Additional tasks to scope out:

• IBC - we need to test Namada -> Cosmos ecosystem / Cosmos ecosystem -> Namada within a test network (Nam <> Osmosis | Cosmos | etc) - TODO
• Bridge - we need to implement and test Ethereum Bridge functionality - TODO