Add HS3UKA_PCF8574 library (#6522)

HS3UKA · web-flow · commit 92ddef8ef4da · 2025-07-01T12:33:01.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -8169,3 +8169,4 @@ https://github.com/lukdog/BleValueSync
 https://github.com/mikeedudee/MS5611-Mike-Refactored.git
 https://github.com/SNP-FIT/ampify-soil-moisture-sensor
 https://github.com/msnicklous/BufferedTrace
+https://github.com/HS3UKA/HS3UKA_PCF8574
