Update cheatsheets

tldr/xmake

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# xmake
+
+> A cross-platform C & C++ build utility based on Lua.
+> More information: <https://xmake.io/#/getting_started>.
+
+- Create an Xmake C project, consisting of a hello world and `xmake.lua`:
+
+`xmake create --language c -P {{project_name}}`
+
+- Build and run an Xmake project:
+
+`xmake build run`
+
+- Run a compiled Xmake target directly:
+
+`xmake run {{target_name}}`
+
+- Configure a project's build targets:
+
+`xmake config --plat={{macosx|linux|iphoneos|...}} --arch={{x86_64|i386|arm64|...}} --mode={{debug|release}}`
+
+- Install the compiled target to a directory:
+
+`xmake install -o {{path/to/directory}}`