feat(learn): Added project-based curriculum tools (#39448)

* feat: added project-based curriculum tools

* fix: allow script to work /w or /wo npm run

* fix: moved console.log to reorder-steps function

* fix: integrated bson-objectid library

curriculum/tools/create-next-step.js

@@ -0,0 +1,46 @@
+const fs = require('fs');
+const path = require('path');
+
+const { reorderSteps, createStepFile } = require('./utils');
+
+const getLastStepFileContent = () => {
+  const filesArr = [];
+  fs.readdirSync(projectPath).forEach(fileName => {
+    if (
+      path.extname(fileName).toLowerCase() === '.md' &&
+      !fileName.endsWith('final.md')
+    ) {
+      filesArr.push(fileName);
+    }
+  });
+
+  const fileName = filesArr[filesArr.length - 1];
+  let lastStepFileNum = fileName.split('.')[0].split('-')[1];
+  lastStepFileNum = parseInt(lastStepFileNum, 10);
+  if (filesArr.length !== lastStepFileNum) {
+    throw `Error: The last file step is ${lastStepFileNum} and there are ${filesArr.length} files.`;
+  }
+  const fileContent = fs.readFileSync(projectPath + fileName, 'utf8');
+  const matchedSection = fileContent
+    .toString()
+    .match(/<section id='challengeSeed'>(?<challengeSeed>[\s\S]+)<\/section>/);
+  let finalChallengeSeed;
+  if (matchedSection) {
+    let {
+      groups: { challengeSeed }
+    } = matchedSection;
+    finalChallengeSeed = challengeSeed ? challengeSeed : '';
+  }
+  return {
+    nextStepNum: lastStepFileNum + 1,
+    challengeSeed: finalChallengeSeed
+  };
+};
+
+const projectPath = (process.env.CALLING_DIR || process.cwd()) + path.sep;
+
+const { nextStepNum, challengeSeed } = getLastStepFileContent();
+
+createStepFile({ stepNum: nextStepNum, projectPath, challengeSeed });
+console.log(`Sucessfully added step #${nextStepNum}`);
+reorderSteps();