Draft: Resolve "Extrahovat Gateway z projketu dna-analyser"

Closes #1

checkstyle-suppressions.xml

+<?xml version="1.0"?>
+<!DOCTYPE suppressions PUBLIC
+        "-//Puppy Crawl//DTD Suppressions 1.1//EN"
+        "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+<suppressions>
+    <suppress files=".*Test.java" checks="IllegalCatch"/>
+    <suppress files=".*Test.java" checks="JavadocPackage"/>
+
+    
+    <suppress files="[\\/]builds[\\/]" checks=".*"/>
+    <suppress files="backend[\\/]build[\\/]" checks=".*"/>
+    <suppress files=".*\.jar$" checks=".*"/>
+    <suppress files=".*\.bin$" checks=".*"/>
+    
+</suppressions>