C: Add printing support for Lists

[Smit-create]

No description provided.

[czgdp1807]

Can we just call the following pass in C backend instead of implementing printing of list in C backend again? Let me know if calling the pass will work.

lpython/src/libasr/pass/print_list.cpp

Line 201 in 993fff2

void pass_replace_print_list(

[Smit-create]

The pass is not that robust, see with the current main branch the following fails in the LLVM backend:

def test_print_list():
    a: list[str] = ["ab", "abc", "abcd"]

    print(a) # works
    print(a, a) # fails

test_print_list()

Also, that pass seems to be only working for single argument list type, not with nested tuple, see:

def test_print_list():
    a: list[tuple[i32, i32]] = [(1,2), (3, 4), (5, 6)]

    print(a) # fails

test_print_list()

That will require much work on the pass too.

Moreover, C, at present, doesn't use any passes and already has a design that will need slight modifications to make all this work.

I will fix those issues with the pass in a new PR soon to make it work for LLVM.

[czgdp1807]

Associated issue, #1129. But anyways we still need the ASR pass to work for lists.