Initial gem dependencies (#4229)

These are immediate dependencies, and include many circular dependencies, largely amongst the Atom gems, as indicated by cmake

Signed-off-by: AMZN-alexpete <26804013+AMZN-alexpete@users.noreply.github.com>

Gems/StartingPointCamera/gem.json

@@ -5,9 +5,19 @@
     "origin": "Open 3D Engine - o3de.org",
     "type": "Code",
     "summary": "The Starting Point Camera Gem provides the behaviors used with the Camera Framework Gem to define a camera rig.",
-    "canonical_tags": ["Gem"],
-    "user_tags": ["Rendering", "Gameplay", "Scripting"],
+    "canonical_tags": [
+        "Gem"
+    ],
+    "user_tags": [
+        "Rendering",
+        "Gameplay",
+        "Scripting"
+    ],
     "icon_path": "preview.png",
     "requirements": "",
-    "documentation_url": "https://o3de.org/docs/user-guide/gems/reference/rendering/starting-point-camera/"
+    "documentation_url": "https://o3de.org/docs/user-guide/gems/reference/rendering/starting-point-camera/",
+    "dependencies": [
+        "CameraFramework",
+        "LmbrCentral"
+    ]
 }