add binary size benchmark script

scripts/bench-size.zsh

+#!/usr/bin/env zsh
+WATERMARK="Test"
+
+embed() {
+    local method="$1"
+    local proj="$2"
+    local wasm="$3"
+    local limit="$4"
+    local size="$5"
+
+    local out="./out/size-bench/$method/$proj/$size/$(basename "$wasm")"
+    mkdir -p "$(dirname "$out")"
+
+    if [ "$size" -le "$limit" ]; then
+        snpi -m "$method" -o "$out" -w "$WATERMARK" -l "$size" "$wasm" > /dev/null
+        echo "$method\t$proj\t$size\t$(gdu -b "$out" | awk '{print $1}')"
+    else
+        echo "$method\t$proj\t$size\t"
+    fi
+}
+
+embed_size() {
+    local method="$1"
+    local proj="$2"
+    local wasm="$3"
+    local limit="$4"
+
+    embed "$method" "$proj" "$wasm" "$limit" 10
+    embed "$method" "$proj" "$wasm" "$limit" 20
+    embed "$method" "$proj" "$wasm" "$limit" 50
+    embed "$method" "$proj" "$wasm" "$limit" 100
+    embed "$method" "$proj" "$wasm" "$limit" 200
+    embed "$method" "$proj" "$wasm" "$limit" 500
+    embed "$method" "$proj" "$wasm" "$limit" 1000
+    embed "$method" "$proj" "$wasm" "$limit" 2000
+    embed "$method" "$proj" "$wasm" "$limit" 5000
+    embed "$method" "$proj" "$wasm" "$limit" 10000
+    embed "$method" "$proj" "$wasm" "$limit" 20000
+    embed "$method" "$proj" "$wasm" "$limit" 50000
+}
+
+embed_proj() {
+    local proj="$1"
+    local wasm="$2"
+    local limit_1="$3"
+    local limit_2="$4"
+    local limit_3="$5"
+
+    embed_size "function-reorder"   "$proj" "$wasm"   "$limit_1"
+    embed_size "export-reorder"     "$proj" "$wasm"   "$limit_2"
+    embed_size "operand-swap"       "$proj" "$wasm"   "$limit_3"
+}
+
+embed_proj "Source Map" "./node_modules/source-map/lib/mappings.wasm"    128    67   3130
+embed_proj "wasm-flate" "./node_modules/wasm-flate/wasm_flate_bg.wasm"  1040    44   4996
+embed_proj "ammo.js"    "./node_modules/ammo.js/builds/ammo.wasm.wasm"  5308  4102  29177
+embed_proj "jq-web"     "./node_modules/jq-web/jq.wasm.wasm"            1976    18  22302
+embed_proj "vim-wasm"   "./node_modules/vim-wasm/vim.wasm"             14589    56  56392