feat: Self-hosted Plausible support (#656)

* Self-hosted Plausible support

* Remove leftover import

package-lock.json

@@ -32,7 +32,6 @@
         "mdast-util-to-hast": "^13.0.2",
         "mdast-util-to-string": "^4.0.0",
         "micromorph": "^0.4.5",
-        "plausible-tracker": "^0.3.8",
         "preact": "^10.19.3",
         "preact-render-to-string": "^6.3.1",
         "pretty-bytes": "^6.1.1",
@@ -4451,14 +4450,6 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
-    "node_modules/plausible-tracker": {
-      "version": "0.3.8",
-      "resolved": "https://registry.npmjs.org/plausible-tracker/-/plausible-tracker-0.3.8.tgz",
-      "integrity": "sha512-lmOWYQ7s9KOUJ1R+YTOR3HrjdbxIS2Z4de0P/Jx2dQPteznJl2eX3tXxKClpvbfyGP59B5bbhW8ftN59HbbFSg==",
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/preact": {
       "version": "10.19.3",
       "resolved": "https://registry.npmjs.org/preact/-/preact-10.19.3.tgz",