Introduce BridgeConfigBuilder
In the future, we will want to be able to offer a builder-style API for bridges, and deserialize them from TOML dictionaries.
So BridgeConfig
needs to gain BridgeConfigBuilder
.
MultilineListBuilder
(and its serde helper) will need to be generic over the builder type. The conversion helper to/from Vec
will then have a stronger constraint than I: Display
.