Updated SIFT Comparison Block

[yeldarby]

Description

This PR simplifies the SIFT Comparison blocks so you no longer need to use the SIFT block separately and can pass the images in directly. This allows us to visualize the outputs like in OpenCV's docs.

The old workflow would have looked like this:

Now it looks like this:

And we can also visualize the matches like this:

I also added the option of switching between the brute-force & FLANN based matchers.

Type of change

• New feature (non-breaking change which adds functionality)

How has this change been tested, please provide a testcase or example of how you tested the change?

On my local inference server with a variety of inputs and workflows.

Any specific deployment considerations

No

Docs

• I think they should be auto-built but lmk if otherwise.