Progress: Continue working on getting FSS Embedded Read working and tweak allocations.

Progress: Continue working on getting FSS Embedded Read working and tweak allocations.

The extended list needs a separate parameter and make the `line_start` match the `newline_last` at the start of the function.
Record `newline_last` and `line_start` whenever possible once a new line is found.
Use the variable `comment_start` to make the purpose more clear.

The `closes` array should be initialized before calling `fl_fss_extended_list_content_read()`.
Make sure the `closes` array value is reset when the Content is not found.
Make sure the `closes` array used length is incremented.

The FSS Read functions now handle printing the close strings.
I am now considering adding an `open` variable.
Doing this would then merit moving most things into the `f_fss_item_t`.

Tweak some of the allocations in other FSS functions for allocations that need explicit sizes (`f_memory_array_increase_by()`).