[ADF-3323] Updated doc tools to use DocFX intermediate files (#3601)

* [ADF-3323] Moved source file parsing to main doc tool

* [ADF-3323] Moved source info classes

* [ADF-3323] Added doc YAML generator tool

* [ADF-3323] Added doc YAML/JSON source paths to gitignore

* [ADF-3323] Completed templates and template context code

* [ADF-3323] Added source paths and updated type linker

* [ADF-3323] Final fixes to templates and type linking

* [ADF-3323] Fixed filter for private and protected methods

* [ADF-3323] Content services docs after check and rebuild

* [ADF-3323] Updated docbuild script in package.json

tools/doc/buildYamlSourceInfo.js

@@ -0,0 +1,54 @@
+var fs = require("fs");
+var path = require("path");
+var ejs = require("ejs");
+
+
+var templateFolder = path.resolve("tools", "doc", "yamlTemplates");
+var outputFolder = path.resolve("docs", "sourceinfo");
+
+if (process.argv.length < 3) {
+    console.log("Error: Source filename required");
+    process.exit();
+}
+
+console.log(`Processing ${process.argv[2]}`);
+
+if (!fs.existsSync(outputFolder)) {
+    fs.mkdirSync(outputFolder);
+}
+
+var docData = JSON.parse(fs.readFileSync(path.resolve(process.argv[2]), "utf8"));
+var tempFilename = path.resolve(templateFolder, "template.ejs");
+var tempSource = fs.readFileSync(tempFilename, "utf8");
+var template = ejs.compile(
+    tempSource,
+    {
+        filename: tempFilename,
+        cache: true
+    }
+);
+
+searchItemsRecursively(docData);
+
+
+function searchItemsRecursively(item) {
+    if (interestedIn(item.kind)) {
+        processItem(item);
+    } else if (item.children) {
+        item.children.forEach(child => {
+            searchItemsRecursively(child);
+        });
+    }
+}
+
+
+function interestedIn(itemKind) {
+    return itemKind === 128;
+}
+
+
+function processItem(item) {
+    //console.log(`Generating ${item.name}`);
+    var docText = template(item);
+    fs.writeFileSync(path.resolve(outputFolder, item.name + ".yml"), docText); 
+}