Converted @rollup/html to a standalone package (out of the original monorepo) and made it ESM-native

tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "noEmit": true,
+    "noEmitOnError": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "pretty": true,
+    "sourceMap": true,
+    "strict": true,
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "NodeNext",
+    "allowJs": true
+  },
+  "exclude": ["dist", "node_modules", "test/types"],
+  "include": ["src/**/*", "types/**/*"],
+  "ts-node":  {
+    "esm": true // from the top of https://typestrong.org/ts-node/docs/imports/
+  }
+}