Merge pull request #27160 from amane-ame:resize_hal_rvv

Add RISC-V HAL implementation for cv::resize #27160

This patch implements `cv_hal_resize` using native intrinsics, optimizing the performance of `cv::resize` for `CV_INTER_NEAREST/CV_INTER_NEAREST_EXACT/CV_INTER_LINEAR/CV_INTER_LINEAR_EXACT/CV_INTER_AREA` modes.

Tested on MUSE-PI (Spacemit X60) for both gcc 14.2 and clang 20.1.

```
$ ./opencv_test_imgproc --gtest_filter="*Resize*:*resize*"
$ ./opencv_perf_imgproc --gtest_filter="*Resize*:*resize*" --perf_min_samples=300 --perf_force_samples=300
```

View the full perf table here: [hal_rvv_resize.pdf](https://github.com/user-attachments/files/19480756/hal_rvv_resize.pdf)

### 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
- [ ] The PR is proposed to the proper branch
- [ ] 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

3rdparty/hal_rvv/hal_rvv.hpp

@@ -53,6 +53,7 @@
 #include "hal_rvv_1p0/warp.hpp" // imgproc
 #include "hal_rvv_1p0/thresh.hpp" // imgproc
 #include "hal_rvv_1p0/histogram.hpp" // imgproc
+#include "hal_rvv_1p0/resize.hpp" // imgproc
 #endif
 
 #endif

3rdparty/hal_rvv/hal_rvv_1p0/filter.hpp

@@ -521,16 +521,7 @@ inline int sepFilter(cvhalFilter2D *context, uchar* src_data, size_t src_step, u
 
     uchar* _dst_data = dst_data;
     size_t _dst_step = dst_step;
-    size_t size = sizeof(char);
-    switch (data->dst_type)
-    {
-    case CV_16SC1:
-        size = sizeof(short);
-        break;
-    case CV_32FC1:
-        size = sizeof(float);
-        break;
-    }
+    const size_t size = CV_ELEM_SIZE(data->dst_type);
     std::vector<uchar> dst;
     if (src_data == _dst_data)
     {
@@ -2136,22 +2127,7 @@ inline int boxFilter(const uchar* src_data, size_t src_step, uchar* dst_data, si
 
     uchar* _dst_data = dst_data;
     size_t _dst_step = dst_step;
-    size_t size = cn;
-    switch (dst_depth)
-    {
-    case CV_8U:
-    case CV_8S:
-        size *= sizeof(char);
-        break;
-    case CV_16U:
-    case CV_16S:
-        size *= sizeof(short);
-        break;
-    case CV_32F:
-    case CV_32S:
-        size *= sizeof(float);
-        break;
-    }
+    const size_t size = CV_ELEM_SIZE(dst_type);
     std::vector<uchar> dst;
     if (src_data == _dst_data)
     {

3rdparty/hal_rvv/hal_rvv_1p0/norm_diff.hpp

@@ -1121,7 +1121,7 @@ inline int normDiff(const uchar* src1, size_t src1_step, const uchar* src2, size
 
     bool src_continuous = (src1_step == width * elem_size_tab[depth] * cn || (src1_step != width * elem_size_tab[depth] * cn && height == 1));
     src_continuous &= (src2_step == width * elem_size_tab[depth] * cn || (src2_step != width * elem_size_tab[depth] * cn && height == 1));
-    bool mask_continuous = (mask_step == width);
+    bool mask_continuous = (mask_step == static_cast<size_t>(width));
     size_t nplanes = 1;
     size_t size = width * height;
     if ((mask && (!src_continuous || !mask_continuous)) || !src_continuous) {