I need to test if Dasel preserve Toml comments

I need to test if Dasel preserve Toml comments

Well it doesn't

I played a bit with the multiple update which is super powerfull. I already works for target, I'll add support for condition but I don't think of a usage for source

Well after additional thought, I think I need a new boolean to enable/disable the multiple query because in the case of the following query, we can't guess automatically the meaning

Should .employees.[*].role

1. Return the value for key .employees.[*].role
2. Return "role" value for all employees

I am considering adding a spec parameter named "multipe" to enable multiple query, with default set to false

So I decided to add the flag multiple to enable multiple queries at once