Release slides and add Connor's video for lecture 1

Author: YHTerrance

_data/site.json

@@ -18,9 +18,13 @@
       "hw_handout": "/hw/primerlab/primerlab.zip",
       "hw_writeup": "/hw/primerlab/doc/primerlab/index.html",
       "hw_released": false,
-      "details_released": false,
-      "slides_released": false,
+      "details_released": true,
+      "slides_released": true,
       "extras": [
+        {
+          "title": "Lecture 1 Video (by Connor)",
+          "link": "https://www.youtube.com/watch?v=RXvAC34mcw0"
+        },
         {
           "title": "Rust Book Chapters 1-3",
           "link": "https://doc.rust-lang.org/book/ch01-00-getting-started.html"