[3.4] Add information about the disparity-to-depth mapping matrix

Add information about the disparity-to-depth mapping matrix. Add more references about other related functions in the calib3d doc.

Report that animated webp is not supported for now

Disabled compiling warnings in case of symbols in cmake for 3.4

build: eliminate uninitialized warnings from GCC12

dnn: eliminate GCC12 warning in total() call

Removes a broken link

Tutorial for Generalized Hough Ballard and Guil Transform

Fix some typos in platforms/, samples/.

Fix angle discretization in Hough transforms

In some situations the last value was missing from the discrete theta
values. Now, the last value is chosen such that it is close to the
user-provided maximum theta, while the distance to pi remains always
at least theta_step/2. This should avoid duplicate detections.

A better way would probably be to use max_theta as is and adjust the
resolution (theta_step) instead, such that the discretization would
always be uniform (in a circular sense) when full angle range is used.

Add flags to set the camera intrinsic parameters as an initial guess (can allow converging to the correct camera intrinsic parameters).
Add -imshow-scale flag to resize the image when displaying the results.
Add -enable-k3 flag to enable or disable the estimation of the K3 distortion coefficient.

QR code, change resize interpolation for Arm

 Update homography tutorial with a small exercise

Suppress warnings in carotene on macOS ARM64 for 3.4 branch

fix python test_detect_and_decode_multi

fix python test_detect_and_decode_multi, sort QR in multiDetect/multiDecode

enable tests with "version_5_up.jpg", "version_5_top.jpg"

remove lambda