Add support for search by key/value in generic map

## Description
On many occasions (e.g., to map from Type to string and vice versa), it's necessary to hold in memory a key=>value and value=>key maps. Implementing a generic mechanism to abstract the two-way search through helper functions over existing map types would be helpful. The new method' signatures might look like this:
```go
func (m Map[K, V]) GetKeyWithValue(value V) (K,bool)
```
