Rename `Bridge` to reflect that it is the _configuration_ for a bridge.
On !755 (comment 2841052) , @eta suggests that we rename Bridge
to something that better reflects the fact that it represents the configuration for a bridge.
Possibilities include:
BridgeLine
BridgeConf
ConfiguredBridge
Of these I like BridgeConf
the best.
cc @Diziet. I can do this rename trivially with Rust-Analyzer, but I'd rather do it after we have consensus on a name, and when it won't cause merge conflicts for you.