units: Restore original EOLs

[b4n]

Do not manage EOL for any test input that have non-LF EOLs, in order to keep the tests as they were originally meant to be.

Since 1efb9b9 all EOLs are converted by default, which is a problem for test files requiring a specific EOL type to work. Those should not see any conversion whatsoever, basically treated as binary data.

The changes here are mostly generated with:

$ find Units/ -name 'input*' -exec file '{}' ';' | \
  grep CR | \
  sed 's/: .*$//' | \
  while read -r f; do \
    d="${f%/*}"; \
    b="${f##*/}"; \
    echo "$b -text" > "$d/.gitattributes"; \
    git add "$d/.gitattributes"; \
  done

---

@masatake I see there was an attempt at this before #3425, what was the exact issues it created?
Couldn't we to something like this? (remove the text attribute rather trying to remove the auto value)

/Units/**/input* -text

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.95%. Comparing base (74ff528) to head (3148a3b).
Report is 11 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4268   +/-   ##
=======================================
  Coverage   85.95%   85.95%           
=======================================
  Files         246      246           
  Lines       63470    63434   -36     
=======================================
- Hits        54554    54525   -29     
+ Misses       8916     8909    -7     

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