feat: Docker Compose files in repos (#84)

Co-authored-by: Karl-Einar Bergstrøm <karl-einarb@outlook.com>

docs/config.md

@@ -75,6 +75,7 @@ theme:
   databricksColor: ["#ff757f"]
   repoColor: ["#c099ff"]
   springColor: ["#c3e88d"]               # Spring Boot config files
+  composeColor: ["#82aaff"]              # Docker Compose files
 ```
 
 A role lazysecrets doesn't know, a typo or one from a newer version, is