Re-implement pHash comparison using cv2. Drop imagehash+Pillow

[Avasam]

• Re-implement pHash comparison using cv2.
• Drop imagehash and Pillow as dependencies
• Reduce bundle size by 1.93MB (139.004 --> 137.074)
• ~1.6x speed improvement for pHash comparison
• Reduce install/build time considerably by not installing D3DShot from GitHub
• Testing suggests some images might differ in comparison from old implementation by at most 2/64 (3.125%)

Timing difference done using:

    def new():
        source_hash = __cv2_phash(source)
        capture_hash = __cv2_phash(capture)
        return np.count_nonzero(source_hash != capture_hash)
    new_time = timeit.Timer(new).timeit(1000)

    def old():
        source_hash = imagehash.phash(Image.fromarray(source))
        capture_hash = imagehash.phash(Image.fromarray(capture))
        return source_hash - capture_hash
    old_time = timeit.Timer(old).timeit(1000)

    print(old_time, "/", new_time, "=", old_time / new_time)

[Avasam]

Pyright error is likely microsoft/pyright#6722