Added videos (#2264)

Author: AyushSagar16

source/docs/hardware/hardware-basics/wiring-pneumatics-ph.rst

@@ -5,6 +5,14 @@ This page describes wiring pneumatics with the REV Pneumatic Hub (PH). For instr
 
 .. hint:: For pneumatics safety & mechanical requirements, consult this year's Robot Construction rules. For mechanical design guidelines, the FIRST Pneumatics Manual is located `here <https://www.firstinspires.org/sites/default/files/uploads/resource_library/frc/technical-resources/frc_pneumatics_manual.pdf>`__
 
+.. raw:: html
+
+    <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto;">
+        <iframe src="https://www.youtube-nocookie.com/embed/uQEiNiHT9fs" frameborder="0" allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe>
+    </div>
+
+----
+
 Wiring Overview
 ---------------
 

source/docs/zero-to-robot/step-1/intro-to-frc-robot-wiring.rst

@@ -11,6 +11,14 @@ Introduction to FRC Robot Wiring
 
 Overview
 --------
+.. raw:: html
+
+    <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto;">
+        <iframe src="https://www.youtube-nocookie.com/embed/lGgIhxYuSHM" frameborder="0" allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe>
+    </div>
+
+----
+
 .. tabs::
 
    .. group-tab:: REV