Add wasm htaccess gzip setup example; Fix build with SDL installed

Signed-off-by: falkTX <falktx@falktx.com>

carla

@@ -1 +1 @@
-Subproject commit e3a0aad27a01c1a91e12000c9df856a1df0f34fa
+Subproject commit c6f49f6da367306f0c02e49dcfd6fba2d7c93551

src/emscripten/htaccess

@@ -0,0 +1,13 @@
+RewriteEngine on
+RewriteCond %{HTTP:Accept-Encoding} gzip
+RewriteCond %{REQUEST_URI} .*\.(data|js|wasm)
+#RewriteCond %{REQUEST_FILENAME}.gz -s
+RewriteRule ^(.+) $1.gz
+RewriteRule "\.data\.gz$" "-" [T=application/octet-stream,E=no-brotli,E=no-gzip]
+RewriteRule "\.js\.gz$" "-" [T=application/javascript,E=no-brotli,E=no-gzip]
+RewriteRule "\.wasm\.gz$" "-" [T=application/wasm,E=no-brotli,E=no-gzip]
+
+<FilesMatch ".+\.gz$">
+        Header set Content-Encoding gzip
+        Header append Vary Accept-Encoding
+</FilesMatch>