Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

appveyor.yml

@@ -0,0 +1,32 @@
+---
+image: Visual Studio 2019
+
+cache:
+  - '%USERPROFILE%\.conan -> conanfile.py'
+
+environment:
+  matrix:
+    - job_name: static
+    - job_name: shared
+
+install:
+  - set PATH=C:\Python311-x64\Scripts;%PATH%
+  - py -3 -m pip install conan==1.59.0
+  - git submodule update --init --recursive
+
+for:
+  - matrix:
+      only:
+        - job_name: static
+    before_build:
+      - conan install -if _build -o with_tests=False .
+  - matrix:
+      only:
+        - job_name: shared
+    before_build:
+      - conan install -if _build -o with_tests=False -o shared=True .
+
+build_script:
+  - set CONAN_CPU_COUNT=50
+  - set CTEST_OUTPUT_ON_FAILURE=1
+  - conan build -bf _build -if _build .