Add .asStringRecord

[hongkongkiwi]

It would be great to have a feature which produces a Record<string, string> from a set of strings.

For example if I have an environment variable like this:
"a=1,b=2,c=3" or string quoted ""a"="1","b"="2""

Right now, I can do it with this code:

  const envMetadata = Array.from(env.get("METADATA").default([]).asSet()).reduce((acc: Record<string, string>, metadata: string) => {
    const [key, value = ""] = metadata.split("=");
    acc[key] = value;
    return acc;
  }, {});

Or to handle the string quoted case:

  const envMetadata = Array.from(env.get("METADATA").default([]).asSet()).reduce((acc: Record<string, string>, metadata: string) => {
    const [key, value = ""] = metadata.split("=");
    acc[key.replace(/^["']|["']$/g, "")] = value.replace(/^["']|["']$/g, "");
    return acc;
  }, {});

It would be super awesome if I could just have a asStringRecord(",", "="), then the code would be much cleaner.

So the proposal is to add:

asStringRecord(recordDelimiter: string = ",", itemSeperator: string = "=")

This is quite neat as you could also do something like asIntRecord etc. And it's quite flexible as you can set the delimiter to say newline for records.