SWDEV-286322 - add an attribute file to modify EOL

Change-Id: I5ca49a0107e129a2f949d767d2d6e0169140191d

.gitattributes

@@ -0,0 +1,11 @@
+# Set the default behavior, in case people don't have core.autolf set.
+* text=auto
+
+# Explicitly declare text files you want to always be normalized and converted
+# to have LF line endings on checkout.
+*.c text eol=lf
+*.cpp text eol=lf
+*.cc text eol=lf
+*.h text eol=lf
+*.hpp text eol=lf
+*.txt text eol=lf