feat: support read-only address url param

[samsiegart]

fixes #361

Description

Adds support for an address url param. E.g. https://ecb1905c.dapp-inter-test.pages.dev/?address=agoric1ldmtatp24qlllgxmrsjzcpe20fvlkp448zcuce. When used, it will connect to the dapp with that address in a read-only fashion, and let you copy messages to sign from the console.

I had to upgrade to the latest @agoric/web-components to use the newer clientConfig arg, which required updating some other deps and fixing some type issues along the way.

Screenshot of toast and console output after offer is "made"

Example message copied from console (create vault)

[
    {
        "typeUrl": "/agoric.swingset.MsgWalletSpendAction",
        "value": {
            "owner": "+3a+rCqoP/+g2xwkLAcqeln7BrU=",
            "spendAction": "{\"body\":\"#{\\\"method\\\":\\\"executeOffer\\\",\\\"offer\\\":{\\\"id\\\":1724822982051,\\\"invitationSpec\\\":{\\\"callPipe\\\":[[\\\"getCollateralManager\\\",[\\\"$0.Alleged: ATOM brand#board01547\\\"]],[\\\"makeVaultInvitation\\\"]],\\\"instancePath\\\":[\\\"VaultFactory\\\"],\\\"source\\\":\\\"agoricContract\\\"},\\\"offerArgs\\\":\\\"#undefined\\\",\\\"proposal\\\":{\\\"give\\\":{\\\"Collateral\\\":{\\\"brand\\\":\\\"$0\\\",\\\"value\\\":\\\"+880256\\\"}},\\\"want\\\":{\\\"Minted\\\":{\\\"brand\\\":\\\"$1.Alleged: IST brand#board0257\\\",\\\"value\\\":\\\"+5000000\\\"}}}}}\",\"slots\":[\"board01547\",\"board0257\"]}"
        }
    }
]

[github-actions]

Network:
Commit: 7914bec
Ref: refs/pull/362/merge
IPFS v1 hash: bafybeig63d6pjqikzmn4eclxlp6sy3nqeb2gx4lwjyrjsf5dqwsx4c4s7y
CF - DWeb - 4EVERLAND

[cloudflare-workers-and-pages]

Deploying dapp-inter-test with    Cloudflare Pages

Latest commit:	8415cca
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[cloudflare-workers-and-pages]

Deploying agoric-dapp-inter-emerynet with    Cloudflare Pages

Latest commit:	8415cca
Status:	✅  Deploy successful!
Preview URL:	https://a29b9256.agoric-dapp-inter-emerynet.pages.dev
Branch Preview URL:	https://readonly-address.agoric-dapp-inter-emerynet.pages.dev

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