Added qh3 as a package

recipes/qh3/conda_build_config.yaml

@@ -0,0 +1,4 @@
+c_stdlib_version:       # [osx and x86]
+  - '10.15'             # [osx and x86]
+MACOSX_SDK_VERSION:     # [osx and x86]
+  - '10.15'             # [osx and x86]

recipes/qh3/meta.yaml

@@ -0,0 +1,54 @@
+{% set name = "qh3" %}
+{% set version = "1.0.7" %}
+
+package:
+  name: {{ name|lower }}
+  version: {{ version }}
+
+source:
+  url: https://pypi.io/packages/source/{{ name[0] }}/{{ name }}/qh3-{{ version }}.tar.gz
+  sha256: eb527d8317746209509b9c575527577cdc9b3cfb0f49294fc1cd109b0570362c
+
+build:
+  skip: True  # [py<37]
+  script:
+    - export OPENSSL_DIR=$PREFIX  # [osx]
+    - export AWS_LC_SYS_CMAKE_BUILDER=1
+    - {{ PYTHON }} -m pip install . -vv --no-deps --no-build-isolation
+  number: 0
+
+requirements:
+  build:
+    - {{ stdlib('c') }}
+    - {{ compiler('c') }}
+    - {{ compiler('cxx') }}
+    - {{ compiler('rust') }}
+    - cmake
+    - make
+    - nasm  # [win]
+  host:
+    - python
+    - maturin >=1.2,<2.0
+    - pip
+    - openssl  # [osx]
+    - clangdev  # [linux]
+  run:
+    - python
+
+test:
+  imports:
+    - qh3
+  commands:
+    - pip check
+  requires:
+    - pip
+
+about:
+  home: https://github.com/jawah/qh3
+  summary: A lightway and fast implementation of QUIC and HTTP/3
+  license: BSD-3-Clause
+  license_file: LICENSE
+
+extra:
+  recipe-maintainers:
+    - thewchan