feat: add image watermark

image-watermark/deno.json

@@ -0,0 +1,12 @@
+{
+  "tasks": {
+    "dev": "deno run --watch main.ts",
+    "watermark": "deno run --allow-read --allow-write --allow-env --allow-ffi main.ts",
+    "test": "deno test --allow-read --allow-write --allow-env --allow-ffi"
+  },
+  "nodeModulesDir": "auto",
+  "imports": {
+    "@std/assert": "jsr:@std/assert@1",
+    "sharp": "npm:sharp@^0.33.0"
+  }
+}