Prepare beta release.

[cristianoc]

Here are things noticed about the alpha release:

• Forced newlines after certain switch cases: it there a reason why It has changed? https://github.com/DZakh/rescript-struct/pull/1/files#r914188456
  will leave it for now
• Crash observed in CI when running rescript on Windows, investigate (see "rescript build" crashes on Windows #5517). Solved
• Document "not a valid global name" check which is now strict
• Compiler started adding empty strings around values in template literals (Example) Clean up strings in the compiler toolchain #5522
  That behaviour is to be expected, coming from a bug fix.
• Sync latest syntax.

[DZakh]

Compiler started adding empty strings around values in template literals (DZakh/sury#1 (comment))

Example:

Js.log(`${1->Js.Int.toString}${2->Js.Int.toString}`)

Output:

console.log("" + (1).toString() + "" + (2).toString() + "");

Before:

console.log((1).toString() + (2).toString());

[cristianoc]

Thanks! Can repro directly from the command line.