Add additional supported file extensions to formatter script

The `.ipp` and `.tpp` file extensions, commonly used for inline or template function definitions included in C++ header
files, have now been added to the Arduino sketch specification as supported extensions. Even though it is unlikely such
extensions will ever be used in the example sketches of this repository, it is best to be comprehensive in the
extensions covered by the formatter script

Author: per1234

examples_formatter.sh

@@ -5,7 +5,9 @@ find \
     -name '*.c' -or \
     -name '*.cpp' -or \
     -name '*.h' -or \
-    -name '*.ino' \
+    -name '*.ino' -or \
+    -name '*.ipp' -or \
+    -name '*.tpp' \
   \) \
   -type f \
   -exec \