feat: add canonicals for npm packages with download badges

Author: mayank1513

canonicals.md

@@ -0,0 +1,7 @@
+- `esbuild-raw-plugin` -> [![Downloads](https://img.jsdelivr.com/img.shields.io/npm/d18m/esbuild-raw-plugin.svg)](https://www.npmjs.com/package/esbuild-raw-plugin)
+
+- `esraw` -> [![Downloads](https://img.jsdelivr.com/img.shields.io/npm/d18m/esraw.svg)](https://www.npmjs.com/package/esraw)
+
+- `esbuild-raw` -> [![Downloads](https://img.jsdelivr.com/img.shields.io/npm/d18m/esbuild-raw.svg)](https://www.npmjs.com/package/esbuild-raw)
+
+- `esbuild-raw-loader` -> [![Downloads](https://img.jsdelivr.com/img.shields.io/npm/d18m/esbuild-raw-loader.svg)](https://www.npmjs.com/package/esbuild-raw-loader)