### Whats added:

 * corrected logic fix and warn String Template in LineLength rule
 * added logic fix and warn long Dot Qualified Expression and Safe Access Expression in LineLength rule
 * added logic fix and warn Value Arguments List in LineLength rule
 * added and corrected fix and warn tests in LineLength rule
 * corrected code and KDoc in method appendNewlineMergingWhiteSpace in AstNodeUtils.kt
 * fix code with diktat:fix@diktat
 * added comments to classes and functions
 * correct code with running detect

 ### Issue (#1243)

diktat-rules/src/main/kotlin/org/cqfn/diktat/ruleset/rules/chapter3/LineLength.kt

@@ -567,14 +567,14 @@ class LineLength(configRules: List<RulesConfig>) : DiktatRule(
      *@param node node in which to search
      *@param dotList mutable list of ASTNode to store nodes
      */
-    private fun searchDot(node: ASTNode, dotList: MutableList<ASTNode>) {
+    private fun searchDotOrSafeAccess(node: ASTNode, dotList: MutableList<ASTNode>) {
         if (node.elementType == DOT_QUALIFIED_EXPRESSION || node.elementType == SAFE_ACCESS_EXPRESSION || node.elementType == POSTFIX_EXPRESSION) {
             node.getChildren(null)
                 .filter {
                     it.elementType == DOT_QUALIFIED_EXPRESSION || it.elementType == SAFE_ACCESS_EXPRESSION || it.elementType == POSTFIX_EXPRESSION
                 }
                 .forEach {
-                    searchDot(it, dotList)
+                    searchDotOrSafeAccess(it, dotList)
                 }
             if (node.elementType != POSTFIX_EXPRESSION) {
                 dotList.add(node)