FEM: add gitattributes file to let git manage file endings and normal…

…ize them

src/Mod/Fem/.gitattributes

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+# In case people don't have core.autocrlf set, this will manage the default line-ending
+# behaviour for all files recursively
+# * text=auto
+# to be save this will be commented
+
+
+# for more information see forum topic and pull request
+# https://github.com/FreeCAD/FreeCAD/pull/2752
+# https://forum.freecadweb.org/viewtopic.php?f=17&t=41117
+
+
+# get all used file types
+# in a directory in a bash use
+# find . -type f -name '*.*' | sed 's|.*\.||' | sort -u
+# add all of them either to text or binary
+
+
+# Explicitly declare which files we wish to always normalize line-endings on
+
+# standard endings
+*.bat text
+*.cpp text
+*.csv text
+*.h text
+*.md text
+*.py text
+*.qrc text
+*.ts text
+*.txt text
+*.ui text
+*.xml text
+*.yml text
+
+# Fem specific endings
+*.dat text
+*.frd text
+*.geo text
+*.inp text
+*.sif text
+*.unv text
+*.vtk text
+*.z88 text
+
+
+# These files will always be checked out with CRLF, i.e. windows-style line endings. This
+# really should not be needed...
+# *.SomeWindowsFileExtensionThatReallyRequiresCRLFEvenInLinux eol=crlf
+
+
+# These files should be ignored as it pertains to line-endings, because they are binary.
+# Since auto normalize is deactivated all these could be commented too.
+# *.dox binary
+# *.FCStd binary
+# *.jpg binary
+# *.png binary
+# *.pyc binary
+# *.qm binary
+# *.svg binary
+
+
+# use git to manually correct the file endings
+# git add --renormalize .