Ability to add comments

[SquishyDoggo]

Is your feature request related to a problem? Please describe.
There are some vocabulary which need explanation to know their translation.
For example "to exist" in 🇯🇵 means いる for animate objects and ある for inanimate objects. So if the word "to exist" is queried the user does not know which translation cursary expects.

Describe the solution you'd like
The user should be able to enter comments in the dictionary file. Then cursary should be able to differentiate between comments and vocabulary and display the comment in the query screen.