Place class/struct definition on the next line after template definition.

Example:
```cpp
template <typename TValue> struct ISetter<TValue>
{
    virtual void Set(TValue value) = 0;

    virtual ~ISetter<TValue>() = default;
};
```
=>
```cpp
template <typename TValue>
struct ISetter<TValue>
{
    virtual void Set(TValue value) = 0;

    virtual ~ISetter<TValue>() = default;
};
```