Add script to generate markdown tables from column + row input (raycast#608)

* Create create-markdown-table.js
* Add node dep instructions
* Update commands/conversions/create-markdown-table.js

Co-authored-by: Thiago Holanda <unnamedd@gmail.com>

Author: rnystrom

commands/conversions/create-markdown-table.js

@@ -0,0 +1,61 @@
+#!/usr/bin/env node
+
+// Dependency: This script requires Nodejs.
+// Install Node: https://nodejs.org/en/download/
+
+// Required parameters:
+// @raycast.schemaVersion 1
+// @raycast.title Markdown Table
+// @raycast.packageName Conversions
+// @raycast.mode silent
+
+// Optional parameters:
+// @raycast.icon 🧱
+// @raycast.argument1 { "type": "text", "placeholder": "Columns" }
+// @raycast.argument2 { "type": "text", "placeholder": "Rows" }
+
+// Documentation:
+// @raycast.description Create a markdown table template
+// @raycast.author Ryan Nystrom
+// @raycast.authorURL https://github.com/rnystrom
+
+const child_process = require("child_process");
+
+function pbcopy(data) {
+  return new Promise(function (resolve, reject) {
+    const child = child_process.spawn("pbcopy");
+
+    child.on("error", function (err) {
+      reject(err);
+    });
+
+    child.on("close", function (err) {
+      resolve(data);
+    });
+
+    child.stdin.write(data);
+    child.stdin.end();
+  });
+}
+
+let [columns, rows] = process.argv.slice(2);
+columns = Math.max(parseInt(columns), 1);
+rows = Math.max(parseInt(rows), 1);
+
+let emptyTemplate = "   ";
+let headerTemplate = "---";
+let rowArr = Array(columns + 1).fill("|");
+
+let lines = [];
+
+// header
+lines.push(rowArr.join(emptyTemplate));
+// header spacer |---|
+lines.push(rowArr.join(headerTemplate));
+
+// rows
+for (let i = 0; i < rows; i++) {
+  lines.push(rowArr.join(emptyTemplate));
+}
+
+pbcopy(lines.join("\n"));