Add .gitattributes file

.svg files were not treated as binary which means they were spamming up
the diff log.

Bash files were not being pulled with LF line endings, which means they
couldn't be run by Windows Subsystem for Linux.

Bash files were renamed .sh to easily allow them to be recognized by
both .gitattributes and humans.

Taken from https://github.com/alexkaratarakis/gitattributes.

build_scripts/linux/format.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+clang-format --version
+
+if [ $? -eq 0 ]; then
+    echo "Clang-format found."
+    build_path="`dirname \"$0\"`"
+    project_path=$build_path/../..
+
+    find $project_path/src/ -regex '.*\.\(cpp\|h\)' -exec clang-format -style=file -i {} \; -exec echo "Iteration 1: {}" \;
+    find $project_path/src/ -regex '.*\.\(cpp\|h\)' -exec clang-format -style=file -i {} \; -exec echo "Iteration 2: {}" \;
+    echo "DONE"
+else
+    echo "Could not find clang-format."
+fi
+