feat: add python getDef helper

[ShaunSHamilton]

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

Adds a helper I think we might want to use in some Python curriculum tests. As such, I created a separate module for the code.

Example Code to Test

NUMBER_OF_DISKS = 3
number_of_moves = 2 ** NUMBER_OF_DISKS - 1
rods = {
    'A': list(range(NUMBER_OF_DISKS, 0, -1)),
    'B': [],
    'C': []
}

def move(n, source, target, auxiliary):
    # display starting configuration
    for i in range(number_of_moves):
        if (i + 1) % 3 == 1:
            print(f'Move {i + 1} allowed between {source} and {target}')
            forward = False
            if len(rods[target]) == 0:
                forward = True
        elif (i + 1) % 3 == 2:
            print(f'Move {i + 1} allowed between {source} and {auxiliary}')
        elif (i + 1) % 3 == 0:
            print(f'Move {i + 1} allowed between {auxiliary} and {target}')

Example test

// Test if `forward` is actually set to `True` when `rods[target]` is `[]`
({ test: () => 
  {
    const move = __helpers.python.getDef(code, "move");
    const {function_body, function_indentation} = move;
    const c = `
NUMBER_OF_DISKS = 3
number_of_moves = 2 ** NUMBER_OF_DISKS - 1
rods = {
    'A': list(range(NUMBER_OF_DISKS, 0, -1)),
    'B': [],
    'C': []
}

forward = False

def move(n, source, target, auxiliary):
${function_body.match(/\s+/)[0]}global forward
${function_body}

print(move(NUMBER_OF_DISKS, "A", "C", "B"))
assert forward == True
`;
    const out = __pyodide.runPython(c); // If this does not throw, code is correct
  }
})

I tried to prevent the formatting changes, but failed