[new]: `get_value(key_value_items, key)`

[unytics]

Check the idea has not already been suggested

• I could not find my idea in existing issues

Edit the title above with self-explanatory function name and argument names

• The function name and the argument names I entered in the title above seems self explanatory to me.

BigFunction Description as it would appear in the documentation

Return value at key key from key_value_items array

Examples of (arguments, expected output) as they would appear in the documentation

• get_value([struct("k" as key, 1 as value)], "k") --> 1
• get_value([struct("k" as key, 1 as value)], "a") --> null

[unytics]

congrats @LEPINET