Git ignore files

alpaga/.gitignore

+ml_parser_generator
+alpaga
+ml_parser_generator.native
+_build/
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runtime/.gitignore

+tmp/
+*.o
\ No newline at end of file

tests/.gitignore

+**/*.ast
+**/*.cfg
+**/*.cfg0
+**/*.cfg1
+**/*.cfg2
+**/*.cfg3
+**/*.e.dump
+**/*.e.html
+**/*.exe
+**/*.json
+**/*.lex
+**/*.linear
+**/*.linear1
+**/*.ltl
+**/*.rig
+**/*.rtl
+**/*.s
+**/*.svg
+results.html
+__pycache__
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