Separate fire damage from lava and flint from damage like falldamage

[Ruymanphone]

Is your feature request related to a problem? Please describe.
When users burn me with lava

Describe the solution you'd like
No harm from burning

Describe alternatives you've considered
()

Additional context
No additional context

If applicable, specify target Minecraft version.
1.15.2

[PintaPepo]

What would be the use case for this? In which cases the pvp and damage flags are not enough?

[Ruymanphone]

For servers where you want monsters to harm you inside the plot but you don't want a friend to burn you with a bucket of lava