feat: allow customizing ci branch per repo

src/tci.rs

@@ -24,6 +24,10 @@ impl Tci {
 			return false; // we are in whitelist mode and this repo is not whitelisted
 		}
 
+		if let Ok(repo_branch) = self.repo.cfg.get_str("tci.branch") {
+			return self.repo.updated(repo_branch);
+		}
+
 		match self.cfg.branch.as_deref() {
 			None => self.repo.updated("tci"),
 			Some("") => true,