switch to a Document trait and introduce Script/Head/Style/Meta components (#2635)

* switch to a Document trait and introduce Script/Head/Style/Meta components

* Fix desktop title

* Insert special elements into the head during the inital SSR render

* Make all head component attributes optional

* hydrate head elements

* improve the server streaming head warning

* Document fullstack head hydration approach

* deduplicate head elements by href

* move Link into head::Link

* document head components

* add meta and title examples

* Fix a few doc examples

* fix formatting

* Add title to playwright tests

* serde is optional on web, but it is enabled by hydrate

* remove leftover console log

packages/html/tsconfig.json

@@ -0,0 +1,18 @@
+{
+    "compilerOptions": {
+        "module": "CommonJS",
+        "lib": [
+            "ES2015",
+            "DOM",
+            "dom",
+            "dom.iterable",
+            "ESNext"
+        ],
+        "noImplicitAny": true,
+        "removeComments": true,
+        "preserveConstEnums": true,
+    },
+    "exclude": [
+        "**/*.spec.ts"
+    ]
+}