Add initial dates for 2026-jan-itp

I'll update for storm cancellations after today, but it's useful to get
this in in advance of the first class starting.

Author: illicitonion

config.prod.json

@@ -245,6 +245,126 @@
               }
             ]
           }
+        },
+        "2026-jan-itp": {
+          "start": "2026-01-10",
+          "end": "2026-04-30",
+          "sprints": {
+            "Module-Welcome": [
+              {
+                "Glasgow": "2026-01-10",
+                "London": "2026-01-10",
+                "North West": "2026-01-10",
+                "Sheffield": "2026-01-10",
+                "South Africa": "2026-01-10",
+                "West Midlands": "2026-01-10"
+              }
+            ],
+            "Module-Onboarding": [
+              {
+                "Glasgow": "2026-01-17",
+                "London": "2026-01-17",
+                "North West": "2026-01-17",
+                "Sheffield": "2026-01-17",
+                "South Africa": "2026-01-17",
+                "West Midlands": "2026-01-17"
+              },
+              {
+                "Glasgow": "2026-01-24",
+                "London": "2026-01-24",
+                "North West": "2026-01-24",
+                "Sheffield": "2026-01-24",
+                "South Africa": "2026-01-24",
+                "West Midlands": "2026-01-24"
+              },
+              {
+                "Glasgow": "2026-01-31",
+                "London": "2026-01-31",
+                "North West": "2026-01-31",
+                "Sheffield": "2026-01-31",
+                "South Africa": "2026-01-31",
+                "West Midlands": "2026-01-31"
+              }
+            ],
+            "Module-Structuring-and-Testing-Data": [
+              {
+                "Glasgow": "2026-02-07",
+                "London": "2026-02-07",
+                "North West": "2026-02-07",
+                "Sheffield": "2026-02-07",
+                "South Africa": "2026-02-07",
+                "West Midlands": "2026-02-07"
+              },
+              {
+                "Glasgow": "2026-02-14",
+                "London": "2026-02-14",
+                "North West": "2026-02-14",
+                "Sheffield": "2026-02-14",
+                "South Africa": "2026-02-14",
+                "West Midlands": "2026-02-14"
+              },
+              {
+                "Glasgow": "2026-02-21",
+                "London": "2026-02-21",
+                "North West": "2026-02-21",
+                "Sheffield": "2026-02-21",
+                "South Africa": "2026-02-21",
+                "West Midlands": "2026-02-21"
+              }
+            ],
+            "Module-Data-Groups": [
+              {
+                "Glasgow": "2026-02-28",
+                "London": "2026-02-28",
+                "North West": "2026-02-28",
+                "Sheffield": "2026-02-28",
+                "South Africa": "2026-02-28",
+                "West Midlands": "2026-02-28"
+              },
+              {
+                "Glasgow": "2026-03-07",
+                "London": "2026-03-07",
+                "North West": "2026-03-07",
+                "Sheffield": "2026-03-07",
+                "South Africa": "2026-03-07",
+                "West Midlands": "2026-03-07"
+              },
+              {
+                "Glasgow": "2026-03-14",
+                "London": "2026-03-14",
+                "North West": "2026-03-14",
+                "Sheffield": "2026-03-14",
+                "South Africa": "2026-03-14",
+                "West Midlands": "2026-03-14"
+              }
+            ],
+            "Module-Data-Flows": [
+              {
+                "Glasgow": "2026-03-21",
+                "London": "2026-03-21",
+                "North West": "2026-03-21",
+                "Sheffield": "2026-03-21",
+                "South Africa": "2026-03-21",
+                "West Midlands": "2026-03-21"
+              },
+              {
+                "Glasgow": "2026-03-28",
+                "London": "2026-03-28",
+                "North West": "2026-03-28",
+                "Sheffield": "2026-03-28",
+                "South Africa": "2026-03-28",
+                "West Midlands": "2026-03-28"
+              },
+              {
+                "Glasgow": "2026-04-11",
+                "London": "2026-04-11",
+                "North West": "2026-04-11",
+                "Sheffield": "2026-04-11",
+                "South Africa": "2026-04-11",
+                "West Midlands": "2026-04-11"
+              }
+            ]
+          }
         }
       }
     },