adds ThreadX clang-format settings and applies it to maceth driver

.clang-format

@@ -0,0 +1,10 @@
+BasedOnStyle:  Microsoft
+BinPackArguments: false
+BinPackParameters: false
+AlignAfterOpenBracket: DontAlign
+AlignConsecutiveMacros: true
+AlignConsecutiveAssignments: true
+IndentCaseLabels: true
+PointerAlignment: Left
+BraceWrapping:
+  AfterCaseLabel: true