Add swc optimizations

- [x] Bring payload down to 1.8mb.
- [x] drop `all.js` use `out.js`

Author: dmjio

examples/miso/.swcrc

@@ -0,0 +1,8 @@
+{
+  "jsc": {
+    "minify": {
+      "compress": true, // equivalent to {}
+      "mangle": true
+    },
+  }
+}

examples/miso/Makefile

@@ -1,6 +1,6 @@
 .PHONY= update build
 
-all: clean update build
+all: clean update build optim
 
 update:
 	cabal update --with-ghc=javascript-unknown-ghcjs-ghc --with-hc-pkg=javascript-unknown-ghcjs-ghc-pkg
@@ -9,6 +9,9 @@ build:
 	cabal build --with-ghc=javascript-unknown-ghcjs-ghc --with-hc-pkg=javascript-unknown-ghcjs-ghc-pkg
 	cp -v ./dist-newstyle/build/javascript-ghcjs/ghc-9.12.2/miso-todomvc-0.1/x/app/build/app/app.jsexe/all.js .
 
+optim:
+	bunx swc ./all.js > out.js
+
 serve:
 	http-server .