CMake module to easily link SQLiteCpp in other CMake projects

Hi Sébastien,

I thought you might find this piece of code interesting. i use this CMake module to link SQLiteCpp in other CMake projects using the find_module() function.

It's as easy as adding the following link in your main CMakeLists.txt file:

```
# Find SQLiteCpp library on local system.
find_package(SQLiteCpp 0.070 REQUIRED)
```

Hopefully you think this is useful.

Kind regards,

Kartik