Adds SDKMan so we can install Kotlin

removes JAVA_HOME as its now managed by SDKMAN

configs/zsh/zshrc

@@ -146,5 +146,7 @@ _load_settings "$HOME/.zsh/configs"
 # aliases
 [[ -f ~/.aliases ]] && source ~/.aliases
 
-export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
-#export JAVA_HOME=/usr/lib/jvm/java-16-oracle
+
+#THIS MUST BE AT THE END OF THE FILE FOR SDKMAN TO WORK!!!
+export SDKMAN_DIR="$HOME/.sdkman"
+[[ -s "$HOME/.sdkman/bin/sdkman-init.sh" ]] && source "$HOME/.sdkman/bin/sdkman-init.sh"