Inline comment support

[baurse]

As can be seen in test_comment_in_table inline comments are technically supported, just not widely implemented.
For all non-inter-table statements, all comments after a statement are treated as belonging to the next statement, which is not correct.

For the table they are implemented in builder.parse_table_constructor and builder.parse_field_list. This should be generalizable to all other statements

[baurse]

Inline comments are now associated to the correct comment, but not yet saved separately from normal line comments

[baurse]

As such, the following

-- Comment before  
return -- Comment line  
-- Comment after

is turned into

-- Comment before
-- Comment line
return
-- Comment after