feat: make og images an emitter to properly await image generation (#1826)

* checkpoint

* make emitters async generators

* fix

* custom font spec

* replace spinner, use disk cache for fonts

* use readline instead

* make og images look nice

package-lock.json

@@ -75,7 +75,6 @@
         "quartz": "quartz/bootstrap-cli.mjs"
       },
       "devDependencies": {
-        "@types/cli-spinner": "^0.2.3",
         "@types/d3": "^7.4.3",
         "@types/hast": "^3.0.4",
         "@types/js-yaml": "^4.0.9",
@@ -1585,15 +1584,6 @@
       "integrity": "sha512-XKLA6syeBUaPzx4j3qwMqzzq+V4uo72BnlbOjmuljLrRqdsd3qnzvZZoxvMHZ23ndsRS4aufU6JOZYpCbU6T1A==",
       "license": "MIT"
     },
-    "node_modules/@types/cli-spinner": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/@types/cli-spinner/-/cli-spinner-0.2.3.tgz",
-      "integrity": "sha512-TMO6mWltW0lCu1de8DMRq9+59OP/tEjghS+rs8ZEQ2EgYP5yV3bGw0tS14TMyJGqFaoVChNvhkVzv9RC1UgX+w==",
-      "dev": true,
-      "dependencies": {
-        "@types/node": "*"
-      }
-    },
     "node_modules/@types/css-font-loading-module": {
       "version": "0.0.12",
       "resolved": "https://registry.npmjs.org/@types/css-font-loading-module/-/css-font-loading-module-0.0.12.tgz",