Updated the wasm builds to generate gzip'ed copies of relevant files to take advantage of althttpd's new capability of substituting gzip files in place of requested files. This cuts over-the-wire size of the fiddle app by more than half.

FossilOrigin-Name: 40925585f1dab25babac46a0f4b9d633315110b8d4ccb04cc6df115d167e5ab4

ext/fiddle/Makefile

@@ -8,7 +8,8 @@ clean:
 
 fiddle_files = emscripten.css fiddle.html \
              fiddle.js fiddle-module.js \
-             fiddle-module.wasm fiddle-worker.js
+             fiddle-module.wasm fiddle-worker.js \
+             $(wildcard *.wasm.gz) $(wildcard *.js.gz)
 
 # fiddle_remote is the remote destination for the fiddle app. It
 # must be a [user@]HOST:/path for rsync.