NotEmptyMap type inheritance

[LVMVRQUXL]

Description

Update the implementation of the NotEmptyMap type for not inheriting from any type like the following:

data class NotEmptyMap<K, V>(val head: Pair<K, V>, val tail: NotEmptyMap<K, V>? = null) {
    val asMap: Map<K, V> get() = TODO()
    val entries: NotEmptySet<Map.Entry<K, V>> get() = TODO()
    val keys: NotEmptySet<K> get() = TODO()
    val values: NotEmptyList<V> get() = TODO()
    val size: StrictlyPositiveInt get() = TODO()
}

Checklist

• Implement.
• Test.
• Refactor.
• Update Work in progress section in changelog.