test: Add tests for input with comments

test/checker/cfl/cfg-basic-comment.0.ok

+cfg-basic.0.ok
\ No newline at end of file

test/checker/cfl/cfg-basic-comment.1.nok

+cfg-basic.1.nok
\ No newline at end of file

test/checker/cfl/cfg-basic-comment.q

+CFG-CFG:S -> aA; A -> aS | a # comment
+# comment

test/checker/cfl/cfg-basic.8c.nok

+S -> aaS | ε # comment
+# comment

test/checker/reg/dfa-basic-comment.0.ok

+dfa-basic.0.ok
\ No newline at end of file

test/checker/reg/dfa-basic-comment.1.nok

+dfa-basic.1.nok
\ No newline at end of file

test/checker/reg/dfa-basic-comment.q

+DFA-DFA:init=A (A, a)=A (A, b)=A final={A} # comment
+# more comments

test/checker/reg/eliminate-eps-basic-comment.0.ok

+init=1 (1, a)={1, 2} (2, a)={2} final={2}

test/checker/reg/eliminate-eps-basic-comment.1.nok

+init=1 (1, a)={1, 2} (2, a)={2} (2,a)={3} final={3}

test/checker/reg/eliminate-eps-basic-comment.q

+NFA-NFA-N:init=1 (1, a)={1, 2} (2, a)={2} (2,ε)={3} final={3} # comment
+# commnet

test/checker/reg/grammar-is-1.4c.ok

+S -> aA | cB |c
+A -> bS
+B -> aC
+C -> bB | b # comment
+# foo bar

test/checker/reg/regex-basic.3c.ok

+(b^*ab^*ab^*)^* + b^* # comment
+# comment