Merge pull request #25028 from asmorkalov:as/fisheye_solvepnp

solvePnP implementation for Fisheye camera model #25028

Credits to Linfei Pan
Extracted from https://github.com/opencv/opencv/pull/24052

**Warning:** The patch changes Obj-C generator behaviour and adds "fisheye_" prefix for all ObjC functions from namespace.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake

Co-authored-by: lpanaf <linpan@student.ethz.ch>
Co-authored-by: Vadim Levin <vadim.levin@xperience.ai>

modules/calib3d/misc/objc/gen_dict.json

@@ -1,4 +1,7 @@
 {
+    "namespaces_dict": {
+        "cv.fisheye": "fisheye"
+    },
     "func_arg_fix" : {
         "Calib3d" : {
             "findCirclesGrid" : { "blobDetector" : {"defval" : "cv::SimpleBlobDetector::create()"} }