Add interface for input option

packages/contracts/src/cli/input/Option.ts

@@ -0,0 +1,76 @@
+import type { OptionType } from "../types";
+
+/**
+ * Input Option
+ * 
+ * Adaptation of Symfony Console's `InputOption`
+ * 
+ * @see https://github.com/symfony/console/blob/7.1/Input/InputOption.php
+ */
+export default interface Option
+{
+    /**
+     * Name of this option
+     *
+     * @type {string}
+     */
+    get name(): string;
+
+    /**
+     * Single character alias for the option
+     * 
+     * @returns {string | undefined}
+     */
+    get short(): string | undefined;
+
+    /**
+     * Short description of this option
+     *
+     * @type {string}
+     */
+    get description(): string;
+
+    /**
+     * The value datatype for this option
+     * 
+     * @type {OptionType}
+     */
+    get type(): OptionType;
+
+    /**
+     * Determine if this option is required
+     *
+     * @returns {boolean}
+     */
+    isRequired(): boolean;
+
+    /**
+     * Opposite of {@link isRequired}
+     *
+     * @returns {boolean}
+     */
+    isOptional(): boolean;
+
+    /**
+     * Determine if this option accepts multiple values
+     *
+     * @returns {boolean}
+     */
+    isArray(): boolean;
+
+    /**
+     * Set default value of this option
+     *
+     * @param {string | number | boolean | (string | number | boolean)[] | null} [value]
+     *
+     * @returns {this}
+     */
+    setDefault(value?: string | number | boolean | (string|number|boolean)[] | null): this;
+
+    /**
+     * Get the default value of this option
+     *
+     * @returns {string | number | boolean | (string | number | boolean)[] | null}
+     */
+    getDefault(): string | number | boolean | (string|number|boolean)[] | null;
+}