fix: file lookup error (#900)

Author: yevheniyJ

src/main/java/com/crowdin/cli/commands/functionality/ProjectFilesUtils.java

@@ -54,6 +54,9 @@ public static boolean equalsIgnoreExtension(String file1, String file2) {
     }
 
     public static String removeExtension(String file) {
+        if (!file.contains(".")) {
+            return file;
+        }
         return file.substring(0, file.lastIndexOf('.'));
     }
 

src/test/java/com/crowdin/cli/commands/functionality/ProjectFilesUtilsTest.java

@@ -85,5 +85,6 @@ public void testFileLookup() {
         assertEquals(file1, ProjectFilesUtils.fileLookup(file1, Map.of(file1, file1, file2, file2)));
         assertEquals(file2, ProjectFilesUtils.fileLookup(file1, Map.of(file2, file2, file3, file3)));
         assertNull(ProjectFilesUtils.fileLookup(file3, Map.of(file1, file1, file2, file2)));
+        assertNull(ProjectFilesUtils.fileLookup("path/to/test", Map.of(file1, file1, file2, file2)));
     }
 }