Performs some necessary work required for the edit command

Adds an implementation for the edit tab completer
Adds an enum representing a paid sign property
Adds an enum representing a paid sign condition property
Adds aliases to all commands

src/main/java/net/knarcraft/paidsigns/command/EditCommand.java

@@ -0,0 +1,16 @@
+package net.knarcraft.paidsigns.command;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class EditCommand extends TokenizedCommand {
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label,
+                             @NotNull String[] args) {
+        return false;
+    }
+
+}
+