Move build:wasm commands to dedicated scripts (#5813)

* add script to build on mac mini

* Remove wasm-prep, rust flag only on wasm-pack build, add ps1 script

* Make it exectuable, tested on macOS

* Add set -e

* Stop scripts on error

---------

Co-authored-by: lf94 <ircsurfer33@gmail.com>

scripts/build-wasm.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -euo pipefail
+
+rm -rf rust/kcl-wasm-lib/pkg
+mkdir -p rust/kcl-wasm-lib/pkg
+rm -rf rust/kcl-lib/bindings
+
+cd rust
+export RUSTFLAGS='--cfg getrandom_backend="wasm_js"'
+wasm-pack build kcl-wasm-lib --release --target web --out-dir pkg
+export RUSTFLAGS=''
+cargo test -p kcl-lib export_bindings
+cd ..
+
+cp rust/kcl-wasm-lib/pkg/kcl_wasm_lib_bg.wasm public
+yarn fmt