Add allow-custom-enchantments config option and null safety for missing enchantments

[usernamevalidation]

PR adds a configurable toggle for custom enchantment support and improves null safety when enchantments are not found in the registry.

1 Added allow-custom-enchantments config option
When false (default), the "ALL" rule only applies to vanilla Minecraft enchantments
When true, the "ALL" rule applies to all enchantments including custom ones
Config option is generated automatically on first run

2 Added null safety to getEnchantment() method
Returns null instead of throwing NullPointerException when enchantment not found

• Logs a warning to console instead of crashing *

3 Added null check to getMaxLevel() method
Returns OptionalInt.empty() when enchantment is null
Prevents crashes when custom enchantments are missing

4 Modified AllConfigEnchantmentEntry.enchant() method
Skips custom enchantments when allow-custom-enchantments is false
Returns null for skipped enchantments

5 Modified getConfigEnchantment() in main class
Filters out null entries from the "ALL" expansion
Uses Optional.ofNullable() to handle skipped enchantments

[usernamevalidation]

response from bug "#59"

[usernamevalidation]

tested on a 1.21.8 server should be 1.21+ unsure if it may work for older versions

[usernamevalidation]

The build failure appears to be from the dependency submission action lacking permissions, not from my code changes. The code compiled successfully before.

opt 1 change these
"

• name: Submit dependency snapshot
  uses: advanced-security/maven-dependency-submission-action@v5
  to
• name: Submit dependency snapshot
  if: github.event.pull_request.head.repo.full_name == github.repository
  uses: advanced-security/maven-dependency-submission-action@v5
  "
  these are suggestions
  yes im new to github take it with a grain of salt i could be yapping for no reason

[usernamevalidation]

i will also add a fix for this in the pull request or try to

[usernamevalidation]

should work now hopefully

[zefir-git]

Yeah, I think it fails on forks as it has no permission to submit. Thanks for your work, will review as soon as I can.