feat!: inject style via constructable CSSStyleSheet and remove CSP entry (#847)

* chore: not inject inline css on server

* feat!: remove csp entry

* keep csp title in readme

* chore: switch to rolldown and tsdown

* update

* dedupe

* update according to review

* emphasize "both" in csp section

* load css with unplugin-raw

* change tsdown entry

tsdown.config.ts

@@ -0,0 +1,32 @@
+import { defineConfig } from "tsdown";
+import raw from "unplugin-raw/rollup";
+
+export default defineConfig([
+  {
+    entry: "src/index.ts",
+    platform: "browser",
+    sourcemap: true,
+    copy: ["src/style.css"],
+    plugins: [raw()],
+  },
+  {
+    entry: "src/global.ts",
+    outputOptions: {
+      file: "dist/index.min.js", // for unpkg/jsdelivr
+      dir: undefined,
+      format: "umd",
+      name: "VueECharts",
+      exports: "default",
+      globals: {
+        vue: "Vue",
+        echarts: "echarts",
+        "echarts/core": "echarts",
+      },
+    },
+    platform: "browser",
+    sourcemap: true,
+    minify: true,
+    dts: false,
+    plugins: [raw()],
+  },
+]);