rc_society dashboard display (#131)

### Description

Closes #130

### Please confirm

- [x] I am the legal owner or represent the legal owner of all work submitted (including LLM-generated code, if any)
- [x] I consent to my changes being added to this FOSS project
- [x] I have confirmed that this does not add new errors or warnings with `utils/clippy.sh`
- [ ] This PR used LLMs to generate some or all of the code changes

Reviewed-on: https://git.ngram.ca/OpenJam/rc-servers/pulls/131

Cargo.lock

@@ -3326,6 +3326,7 @@ dependencies = [
  "log",
  "oj_convert",
  "oj_rc_core",
+ "oj_rc_factory",
  "oj_rc_plugins",
  "serde",
  "serde_json",