Add warning when using negative rect dimensions in draw module

[mzivic7]

Using negative rect dimension values have some undesirable results as shown in #2727.
This PR adds deprecation warning to these draw functions: draw.rect, draw.ellipse, draw.arc when using negative value for rect width and height.
And prevents anything from being drawn at wrong position.
Warnings are also added to docs and tests.
This warning will also be added to draw.aaellipse in #3016

Sample code

import pygame
pygame.init()
screen = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()
run = True
while run:
  for event in pygame.event.get():
      if event.type == pygame.QUIT:
          run = False
  screen.fill((0, 0, 0))
  pygame.draw.rect(screen, "white", (150, 150, -50, 30), 0)
  pygame.draw.ellipse(screen, "white", (150, 150, -50, 30), 0)
  pygame.draw.arc(screen, "white", (150, 150, -50, 30), 0, 180, 0)
  pygame.display.flip()
  clock.tick(60)
pygame.quit()

[bilhox]

It seems fair to me, LGTM !

[ankith26]

while thinking about this, I realised that some other draw API also takes in rect style arguments. How are negative dims handled everywhere else. Whatever fix we do, we should try to be consistent with the approach everywhere

[mzivic7]

I added same warning, docs and tests to draw.rect and draw.arc