Simple support for pages redirects. No wildcard or placeholders or any other stuff supported.
Just put _redirects file into the root of a folder containg static files to be deployed and
put a reference to index.ts in you wrangler.toml as main = "index.ts".
The content of _redirects is as follows.
/original/path1 /new/path2 301
/original/path2 /new/path2 301
...