Add new ml5 Pose Detection video (#1748)

* add pose detection video

* update links, move showcase to new video, add ml5 folder to archives

* minor updates to description

* Update content/videos/ml5/7-posenet/pose-detection/index.json

* Update content/videos/ml5/7-posenet/pose-detection/index.json

* Update content/videos/ml5/7-posenet/pose-detection/index.json

* Update content/videos/ml5/7-posenet/pose-detection/index.json

* Update content/videos/ml5/7-posenet/pose-detection/index.json

* update description

---------

Co-authored-by: Daniel Shiffman <[email protected]>

Author: kfahn22

content/tracks/main-tracks/ml5js-beginners-guide/index.json

@@ -47,7 +47,7 @@
     },
     {
       "title": "PoseNet",
-      "videos": ["ml5/7-posenet/1-finding-keypoints", "ml5/7-posenet/2-pose-classifier", "ml5/7-posenet/3-pose-regression"]
+      "videos": ["ml5/7-posenet/pose-detection", "ml5/7-posenet/2-pose-classifier", "ml5/7-posenet/3-pose-regression"]
     },
     {
       "title": "Convolutional Neural Network",

content/tracks/side-tracks/archive/index.json

@@ -1,5 +1,5 @@
 {
   "title": "Archived Videos",
   "description": "Folder for archived videos",
-  "videos": ["archive/1-image-classification", "archive/2-webcam-classification"]
+  "videos": ["archive/ml5/1-image-classification", "archive/ml5/2-webcam-classification", "archive/ml5/1-finding-keypoints"]
 }

content/videos/ml5/7-posenet/1-finding-keypoints/index.json renamed to content/videos/archive/ml5/1-finding-keypoints/index.json

@@ -111,7 +111,7 @@
         {
           "icon": "🚂",
           "title": "Pose Estimation with PoseNet",
-          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/1-finding-keypoints",
+          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/pose-detection",
           "description": "In this video I cover pose estimation: finding the keypoints of person's pose and skeleton using the pre-trained machine learning model PoseNet."
         },
         {

content/videos/archive/1-image-classification/index.json renamed to content/videos/archive/ml5/1-image-classification/index.json

@@ -61,7 +61,7 @@
         {
           "icon": "🚂",
           "title": "ml5.js Pose Estimation with PoseNet",
-          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/1-finding-keypoints",
+          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/pose-detection",
           "description": "In this video I cover pose estimation: finding the keypoints of person's pose and skeleton using the pre-trained machine learning model PoseNet (in JavaScript with p5.js and ml5.js)."
         },
         {

content/videos/archive/2-webcam-classification/index.json renamed to content/videos/archive/ml5/2-webcam-classification/index.json

@@ -52,7 +52,7 @@
         {
           "icon": "🚂",
           "title": "ml5.js Pose Estimation with PoseNet",
-          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/1-finding-keypoints",
+          "url": "/tracks/ml5js-beginners-guide/ml5/7-posenet/pose-detection",
           "description": "In this video I cover pose estimation: finding the keypoints of person's pose and skeleton using the pre-trained machine learning model PoseNet (in JavaScript with p5.js and ml5.js)."
         },
         {