ASR -> CPython: Add TupleConstant visitor

[kmr-srbh]

Global scope

from lpython import i32, f64

my_first_tuple: tuple[i32, str, f64] = (1, "hello", 2.4)
print(my_first_tuple)

my_second_tuple: tuple[tuple[i32, str], str] = ((1, "hello"), "world")
print(my_second_tuple)

(base) saurabh-kumar@Awadh:~/Projects/System/lpython$ ./src/bin/lpython ./examples/example.py --show-python
def __main__global_init():
    my_first_tuple = (1, "hello", 2.400000)
    my_second_tuple = ((1, "hello"), "world")
def __main__global_stmts():
    print(my_first_tuple)
    print(my_second_tuple)

Local scope

from lpython import i32, f64

def f():
    my_first_tuple: tuple[i32, str, f64] = (1, "hello", 2.4)
    print(my_first_tuple)

    my_second_tuple: tuple[tuple[i32, str], str] = ((1, "hello"), "world")
    print(my_second_tuple)

f()

(base) saurabh-kumar@Awadh:~/Projects/System/lpython$ ./src/bin/lpython ./examples/example.py --show-python
def __main__global_stmts():
    f()
def f():
    my_first_tuple: tuple[i32, str, f64]
    my_second_tuple: tuple[tuple[i32, str], str]
    my_first_tuple = (1, "hello", 2.400000)
    print(my_first_tuple)
    my_second_tuple = ((1, "hello"), "world")
    print(my_second_tuple)

TODO

• Add tests

[nikabot]

See: #2690 (comment)

[kmr-srbh]

Closing due to #2690 (comment)