Bump bundled libarchive version to 3.5.2

- Update bunlded libarchive version used on Windows/Mac
- Enable requested zstd support while we are at it. Closes #211

dependencies/zstd-1.5.0/build/.gitignore

@@ -0,0 +1,33 @@
+# Visual C++
+.vs/
+*Copy
+*.db
+*.opensdf
+*.sdf
+*.suo
+*.user
+*.opendb
+
+VS2008/bin/
+VS2010/bin/
+VS2010/zwrapbench/
+VS2012/
+VS2013/
+VS2015/
+Studio*
+
+# CMake
+cmake/build/
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+build
+lib
+!cmake/lib
+!meson/lib