Closes#555
## Description:
Added random damage for warship shells and defence posts.
Damage mapping: roll 1-5 → 200, 225, 250, 275, 300 damage respectively.
## Please complete the following:
- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I have read and accepted the CLA agreement (only required once).
## Please put your Discord username so you can be contacted if a bug or
regression is found:
kipstzz
icslucas