combine two key-value txt file to one
file1: Administrator:7304d95b5e1c1b268bb0041e6e5a182a radmin12:708a8a836be646afc6b2a11780924028 radmin6:c72147e09e87b02760c624c1488c072b abc:46546546546546545646fdfdfd6465456fdfdfd
file2: Administrator:7304d95b5e1c1b268bb0041e6e5a181a radmin12:708a8a836be646afc6b2a11780924018 radmin6:c72147e09e87b02760c624c1488c071b effggg:fdfdsfsdfsdfwerewrewtgfdsfsdfsd
result: effggg:fdfdsfsdfsdfwerewrewtgfdsfsdfsd Administrator:7304d95b5e1c1b268bb0041e6e5a182a:7304d95b5e1c1b268bb0041e6e5a181a abc:46546546546546545646fdfdfd6465456 radmin6:c72147e09e87b02760c624c1488c072b:c72147e09e87b02760c624c1488c071b radmin12:708a8a836be646afc6b2a11780924028:708a8a836be646afc6b2a11780924018