fix: kiuwan issues

[MotherJammer]

This PR fixes the following issues reported by Kiuwan:

• Provide Javadoc comments for public classes and interfaces - For classes on exceptions, responses and utils folders + POS Autoservicio + POS Integrado
• Do not use Runtime and System classes - For Serial.java
• Cyclomatic complexity - For Serial.java, on write method
• Do not instantiate temporal Objects in loops bodies - For Serial.java
• Avoid catch blocks with empty bodies - For Serial.java
• Avoid using while() and sleep(), instead use wait() and notify() - For Serial.java
• Maximum allowed number of methods - For Serial.java

Successful report

[sonarqubecloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud