refactor(autocomplete): implement autocompleteRefs and remove SlashCommand annotation on Autocomplete Method

lib/src/main/java/net/tomatentum/marinara/parser/AutocompleteParser.java

@@ -0,0 +1,33 @@
+package net.tomatentum.marinara.parser;
+
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.function.Consumer;
+
+import net.tomatentum.marinara.interaction.annotation.AutoComplete;
+
+public class AutocompleteParser implements AnnotationParser {
+
+    private Method method;
+    private Consumer<String[]> consumer;
+
+    public AutocompleteParser(Method method, Consumer<String[]> consumer) {
+        this.method = method;
+        this.consumer = consumer;
+    }
+
+    @Override
+    public void parse() {
+        String[] autocompletes = Arrays.stream(this.method.getAnnotationsByType(AutoComplete.class))
+            .map(AutoComplete::value)
+            .toArray(String[]::new);
+            this.consumer.accept(autocompletes);
+
+    }
+
+    @Override
+    public Method getMethod() {
+        return this.method;
+    }
+    
+}