rename GFG to PrefixTools including usages

Author: PhilippSalvisberg

…/java/org/utplsql/sqldev/model/GFG.xtend …g/utplsql/sqldev/model/PrefixTools.xtendsqldev/src/main/java/org/utplsql/sqldev/model/GFG.xtend renamed to sqldev/src/main/java/org/utplsql/sqldev/model/PrefixTools.xtend sqldev/src/main/java/org/utplsql/sqldev/model/GFG.xtend renamed to sqldev/src/main/java/org/utplsql/sqldev/model/PrefixTools.xtend

@@ -16,7 +16,7 @@
 package org.utplsql.sqldev.model
 
 // converted to Xtend based on Java code on https://www.geeksforgeeks.org/longest-common-prefix-using-binary-search/
-class GFG {
+class PrefixTools {
 	def static int findMinLength(String[] arr, int n) {
 		var int min = Integer.MAX_VALUE
 		for (var int i = 0; i <= (n - 1); i++) {

sqldev/src/main/java/org/utplsql/sqldev/ui/runner/TestOverviewTableModel.xtend

@@ -18,9 +18,9 @@
 import java.util.LinkedHashMap
 import javax.swing.Icon
 import javax.swing.table.DefaultTableModel
-import org.utplsql.sqldev.model.GFG
 import org.utplsql.sqldev.model.runner.Test
 import org.utplsql.sqldev.resources.UtplsqlResources
+import org.utplsql.sqldev.model.PrefixTools
 
 class TestOverviewTableModel extends DefaultTableModel {
 	LinkedHashMap<String, Test> tests
@@ -54,7 +54,7 @@ class TestOverviewTableModel extends DefaultTableModel {
 		}
 		if (commonPrefix === null) {
 			var String[] testArray = newArrayOfSize(tests.keySet.size)
-			commonPrefix = GFG.commonPrefix(tests.keySet.toArray(testArray), tests.keySet.size)
+			commonPrefix = PrefixTools.commonPrefix(tests.keySet.toArray(testArray), tests.keySet.size)
 		}
 		switch (col) {
 			case 0: {