tc.yml: Add ObsidianIRC next to ValwareIRC

Upcoming client

Author: ValwareIRC

_data/tc.yml

@@ -81,3 +81,4 @@
   github: ValwareIRC
   projects:
     - "[DalekIRC](https://github.com/DalekIRC)"
+    - "[ObsidianIRC](https://github.com/ObsidianIRC/ObsidianIRC/)"