docs: add additional javadoc

lib/src/main/java/tech/favware/java8_result/Result.java

@@ -81,6 +81,9 @@ static <U> Result<U> ofOptional(Optional<U> op) {
 		return ofOptional(op, new IllegalArgumentException("Missing Value"));
 	}
 
+	/**
+	 * @return true if the {@link Result} is {@link Ok}
+	 */
 	boolean isOk();
 
 	/**

lib/src/main/java/tech/favware/java8_result/ResultMapFunction.java

@@ -1,7 +1,16 @@
 package tech.favware.java8_result;
 
+/**
+ * @param <T> the type of the input to the function
+ * @param <R> the type of the result of the function
+ */
 public interface ResultMapFunction<T, R> {
 
+	/**
+	 * @param t the input argument
+	 * @return the result of the function
+	 * @throws Throwable the type of throwable thrown by this method
+	 */
 	@SuppressWarnings("java:S112")
 	R apply(T t) throws Throwable;
 }

lib/src/main/java/tech/favware/java8_result/ResultSupplier.java

@@ -8,6 +8,10 @@
  */
 public interface ResultSupplier<T> {
 
+	/**
+	 * @return the result of the operation
+	 * @throws Throwable the type of throwable thrown by this method
+	 */
 	@SuppressWarnings("java:S112")
 	T get() throws Throwable;
 }