Add Clang Formatting

Signed-off-by: Daniel Henry <iamdanhenry@gmail.com>

.clang-format

@@ -0,0 +1,20 @@
+# <project>/.clang-format
+BasedOnStyle: LLVM
+IndentWidth: 2
+TabWidth: 2
+UseTab: Never
+
+# Stop collapsing things to one line
+AllowShortFunctionsOnASingleLine: None       # or 'Empty' if you want only {} allowed
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortBlocksOnASingleLine: false
+
+SortIncludes: true
+IncludeBlocks: Merge
+IncludeCategories:
+  - Regex: '^".*"'
+    Priority: 1
+  - Regex: '^<.*>'
+    Priority: 2