Add Support for a native findFirst() iterative List Collections

A DESCRIPTION OF THE PROBLEM :
It is currently either inefficient or syntactically awkward to get the first item in a collection in a stream, optional, or other functional component.

Consider the following use case:

```java
public class POJO {
   public List<String> codes;
}
```

And a simple use case:

```java
public Optional<String> getFirstCodeSanitized(POJO pojo) {
   return Optional.ofNullable(pojo)
      .map(POJO::codes)
      .map(codes -> {
          if (codes == 0) return null;
          return codes.get(0);
      }) // codes -> codes.stream.findFirst() is a far less efficient but much nicer looking call
     .map(String::trim);
}

Expected:

Much like the .forEach shortcut that collections provides; we could provides a simple list interface shortcut:

```java
public default Optional<T> findFirst() {
   if (isEmpty()) {
      return Optional.empty();
   }
   return Optional.ofNullable(get(0));
}
```

This makes use of standard collections in functional operations far less awkward in the context of Records or POJOs.

```java
public Optional<String> getFirstCodeSanitized(POJO pojo) {
   return Optional.ofNullable(pojo)
      .map(POJO::codes)
      .flatMap(List::findFirst)
     .map(String::trim);
}

I can of course make a static method that does this in my own code, but I feel that this a reasonably common use case that the common library should cover; at least specifically for peaking first item in the list functionally.