This used to work, but maybe with new versions of sumneko_lua. It
stopped working.

Before lazy was default and there was no way of changing that. I've
decided to make it optional because it seems that:

1. People expects sqlite {} or sqlite:extend {} to create all the
   defined table in advance.
2. Performance impact of initializing db object is only 1.0 slower in
   microseconds, so it seems to not be as important as I thought it
   would:

   ```lua
   -- test/lazy.lua
    Benchmark #1: 'Logical Component'
      Time(mean ± σ):     23.7 μs ±  18.7 μs
      Range(min … max):   17.4 μs … 102.3 μs  20 runs
    Benchmark #2: 'Full Initialization'
      Time(mean ± σ):     28.7 μs ±  12.9 μs
      Range(min … max):   24.1 μs …  83.1 μs  20 runs
    Summary
      'Logical Component' ran
      1.2 ± 1.1 times faster than 'Full Initialization'
   ```

Great for user wanting some inspiration to get started with sqlite.lua