MirrorGarden output may include Adapton-produced graphics

[matthewhammer]

• Use motoko-adapton in the MirrorGarden repo, to ensure it can integrate into CI, ic-mt, etc.
• Demoable in two modes now, crudely --- Text editor demo when the window is wide, and Adapton demo with narrow :)
• (A next step is a real interactive menu system, and event capture/replay for CI, and scripts that explore each demo by exercising this menu system. For now things are crude.)
• Upgrade dfx and moc and base

bug report

Note: now found and fixed.

This new demo crashes my use of candid with an error about an infinite value.

Candid decoding error: Deserialize("There is an infinite loop in the record definition, the type is isomorphic to an empty type", "Trailing type: [I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10), I(4), U(1136381571), I(7), U(1269255460), I(10)]\nTrailing value: [19, 01, 03, 03, 00, 00, 00, 00, 00, 00, 01, 03, 03, 00, 03, 00, 00, 00, 00, 01, 03, 03, 00, 06, 00, 00, 00, 00, 01, 03, 03, 00, 09, 00, 78, 78, 00, 01, 03, 03, 00, 0c, 00, 00, 00, 00, 01, 03, 03, 03, 00, 00, 00, 00, 00, 01, 03, 03, 03, 03, 00, 00, 00, 00, 01, 03, 03, 03, 06, 00

The offending line in ic-mt uses a candid macro to decode the graphics, which seems to fail here.

Notably, ic-mt worked fine for other demos (e.g., the one modified here in this PR) and used the same type and similar-looking values (trees of rectangles).

It's not clear yet what is novel about this program, but the issue seems like it's within the Rust-based Candid deserializer logic, not these tools. Still not sure though.