Convert build scripts to CMake (#13427)

scripts/build-lshpack.ps1

@@ -1,18 +0,0 @@
-$ErrorActionPreference = 'Stop'  # Setting strict mode, similar to 'set -euo pipefail' in bash
-. (Join-Path $PSScriptRoot "env.ps1")
-
-Push-Location (Join-Path $BUN_DEPS_DIR 'ls-hpack')
-try {
-  Set-Location (mkdir -Force build)
-  
-  Run cmake .. @CMAKE_FLAGS `
-    -DCMAKE_BUILD_TYPE=Release `
-    -DLSHPACK_XXH=ON `
-    -DSHARED=0
-
-  Run cmake --build . --clean-first --config Release
-
-  Copy-Item ls-hpack.lib $BUN_DEPS_OUT_DIR/lshpack.lib
-
-  Write-Host "-> lshpack.lib"
-} finally { Pop-Location }