fix: correct requires format in apps.db and add missing entries

Opus Overview expects requires as a string (e.g. 'pocket'),
not a table. Fixed pocket apps and added turtle requirement
for turtle controller. Added pocketcontrol.lua entry.

etc/apps.db

@@ -3,6 +3,7 @@
     title = "Turtle Controller",
     category = "RemoteTurtle",
     run = "turtle.lua",
+    requires = "turtle",
   },
   [ "rt_gps_host" ] = {
     title = "GPS Host",
@@ -14,16 +15,22 @@
     category = "RemoteTurtle",
     run = "webbridge.lua",
   },
+  [ "rt_pocket_control" ] = {
+    title = "Pocket Control",
+    category = "RemoteTurtle",
+    run = "pocketcontrol.lua",
+    requires = "pocket",
+  },
   [ "rt_pocket_remote" ] = {
     title = "Pocket Remote",
     category = "RemoteTurtle",
     run = "pocketremote.lua",
-    requires = { pocket = true },
+    requires = "pocket",
   },
   [ "rt_pocket_gps" ] = {
     title = "Pocket GPS",
     category = "RemoteTurtle",
     run = "pocketgps.lua",
-    requires = { pocket = true },
+    requires = "pocket",
   },
 }