Make the 1-click-bom.tsv file accessible to the 1-click-bom extension.

The 1-click-bom extension tries loading the `1-click-BOM.tsv` file by
`GET`ing `[...projecURL]/1-click-BOM.tsx`.
But we have the file in the processor (or later on s3) so using this
approach will let us control the actual `1-click-BOM.tsv` file URL
without re-modifying the extension.

frontend/next.config.js

@@ -65,7 +65,18 @@ module.exports = async phase => {
           source: '/:user/:repo/_',
           destination: '/:user/:repo',
           permanent: true,
-        }
+        },
+        // Make the 1-click-bom.tsv file accessible to the 1-click-bom extension.
+        {
+          source: '/:user/:repo/:project/1-click-BOM.tsv',
+          destination: `${process.env.KITSPACE_PROCESSOR_URL}/files/:user/:repo/HEAD/:project/1-click-BOM.tsv`,
+          permanent: true,
+        },
+        {
+          source: '/:user/:repo/1-click-BOM.tsv',
+          destination: `${process.env.KITSPACE_PROCESSOR_URL}/files/:user/:repo/HEAD/_/1-click-BOM.tsv`,
+          permanent: true,
+        },
       ]
     },
     async rewrites() {