Rename .tools to .mystools for Arduino IDE (#686)

* The Arduino IDE considers the .tools directory
special and warns if it finds .tools the repo

References #672

.tools/cppcheck/config/avr.xml

@@ -1,17 +0,0 @@
-<?xml version="1"?>
-<platform>
-	<char_bit>8</char_bit>
-	<default-sign>signed</default-sign>
-	<sizeof>
-		<short>2</short>
-		<int>2</int>
-		<long>4</long>
-		<long-long>8</long-long>
-		<float>4</float>
-		<double>4</double>
-		<long-double>8</long-double>
-		<pointer>2</pointer>
-		<size_t>2</size_t>
-		<wchar_t>2</wchar_t>
-	</sizeof>
-</platform>

.tools/cppcheck/config/includes.cfg

@@ -1,4 +0,0 @@
-.
-drivers/Linux
-drivers/AES
-drivers/RPi

.tools/cppcheck/config/suppressions.cfg

@@ -1,5 +0,0 @@
-toomanyconfigs
-missingInclude
-missingIncludeSystem
-ConfigurationNotChecked
-unmatchedSuppression