Move intermediate and final output to gitignore

.gitignore

+HY-CS-main.aux
+HY-CS-main.bbl
+HY-CS-main.bcf
+HY-CS-main.blg
+HY-CS-main.fdb_latexmk
+HY-CS-main.fls
+HY-CS-main.log
+HY-CS-main.out
+HY-CS-main.pdf
+HY-CS-main.run.xml
+HY-CS-main.synctex.gz
+HY-CS-main.toc
+msc_english_contents.aux