switch to xmake for package management (#611)

This change removes our dependency on vcpkg for package management, in favour of bringing some code in-tree in the `thirdparty` folder as well as using the xmake build-in package management feature. For the latter, all the package definitions are maintained in the zen repo itself, in the `repo` folder.

It should now also be easier to build the project as it will no longer depend on having the right version of vcpkg installed, which has been a common problem for new people coming in to the codebase. Now you should only need xmake to build.

* Bumps xmake requirement on github runners to 2.9.9 to resolve an issue where xmake on Windows invokes cmake with `v144` toolchain which does not exist
* BLAKE3 is now in-tree at `thirdparty/blake3`
* cpr is now in-tree at `thirdparty/cpr`
* cxxopts is now in-tree at `thirdparty/cxxopts`
* fmt is now in-tree at `thirdparty/fmt`
* robin-map is now in-tree at `thirdparty/robin-map`
* ryml is now in-tree at `thirdparty/ryml`
* sol2 is now in-tree at `thirdparty/sol2`
* spdlog is now in-tree at `thirdparty/spdlog`
* utfcpp is now in-tree at `thirdparty/utfcpp`
* xmake package repo definitions is in `repo`
* implemented support for sanitizers. ASAN is supported on windows, TSAN, UBSAN, MSAN etc are supported on Linux/MacOS though I have not yet tested it extensively on MacOS
* the zencore encryption implementation also now supports using mbedTLS which is used on MacOS, though for now we still use openssl on Linux
* crashpad
* bumps libcurl to 8.11.0 (from 8.8.0) which should address a rare build upload bug

1 files changed, 18 insertions, 0 deletions

diff --git a/thirdparty/ryml/CONTRIBUTING.md b/thirdparty/ryml/CONTRIBUTING.md
new file mode 100644
index 000000000..c8e847bfa
--- /dev/null
+++ b/thirdparty/ryml/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Thanks for your contribution!
+
+* Make sure to clone the project with `git clone --recursive` so that
+  the submodules are initialized correctly.
+* To enable both tests and benchmarks, configure ryml with `-DRYML_DEV=ON`
+  when calling cmake. To enable only tests, use `-DRYML_BUILD_TESTS=ON`; to
+  enable only benchmarks use `-DRYML_BUILD_BENCHMARKS=ON`. All these flags
+  are disabled by default.
+* Code style for pull requests should respect the existing code style:
+    ```c++
+    if(foo)  // no space before parens
+    {   // curly brackets on next line
+        // no tabs; indent with 4 spaces
+        bar();
+    }
+    ```