Add vulkan-volk

recipes/vulkan-volk/bld.bat

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+@echo on
+setlocal EnableDelayedExpansion
+
+mkdir build
+pushd build
+
+cmake .. ^
+    %CMAKE_ARGS% ^
+    -DVOLK_INSTALL=ON
+if errorlevel 1 exit 1
+
+cmake --build . --target install
+if errorlevel 1 exit 1
+
+popd
+

recipes/vulkan-volk/build.sh

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+set -ex
+
+mkdir build
+pushd build
+
+cmake .. \
+    ${CMAKE_ARGS} \
+    -DVOLK_INSTALL=ON
+
+make -j${CPU_COUNT}
+make install
+
+popd

recipes/vulkan-volk/meta.yaml

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+{% set version = "1.3.295" %}
+
+package:
+  # There is already a conda-forge packaged named volk
+  # We use the ubuntu name vulkan-volk to avoid conflict
+  # https://launchpad.net/ubuntu/+source/vulkan-volk
+  name: vulkan-volk
+  version: {{ version }}
+
+source:
+  url: https://github.com/zeux/volk/archive/refs/tags/{{ version }}.tar.gz
+  sha256: aea9f09c49f8a4e36738003c7aa5f08f99d68b96e4028ad9fa9039d2ee9fb251
+
+build:
+  number: 0
+  # This is designed to be a header only / statically linked library
+  # run_exports:
+  #   - {{ pin_subpackage('vulkan-volk', max_pin='x.x.x') }}
+
+requirements:
+  build:
+    - {{ compiler('c') }}
+    - {{ stdlib('c') }}
+    - cmake
+    - ninja  # [not unix]
+    - make   # [unix]
+  host:
+    - libvulkan-headers
+    - libvulkan-loader
+
+test:
+  commands:
+    - test -f ${PREFIX}/include/volk.h  # [unix]
+    - test -f ${PREFIX}/include/volk.c  # [unix]
+    - test -f ${PREFIX}/lib/libvolk.a   # [unix]
+    - if not exist %PREFIX%\\Library\\lib\\volk.lib exit 1  # [win]
+
+about:
+  home: https://github.com/zeux/volk
+  summary: volk is a meta-loader for Vulkan.
+  description: |
+
+    It allows you to dynamically load entrypoints required to use Vulkan
+    without linking to vulkan-1.dll or statically linking Vulkan loader.
+    Additionally, volk simplifies the use of Vulkan extensions by automatically
+    loading all associated entrypoints. Finally, volk enables loading Vulkan
+    entrypoints directly from the driver which can increase performance by
+    skipping loader dispatch overhead.
+
+    volk is written in C89 and supports Windows, Linux, Android and macOS (via
+    MoltenVK).
+
+  license: MIT
+  license_family: MIT
+  license_file: LICENSE.md
+
+extra:
+  recipe-maintainers:
+    - hmaarrfk