Add minimum tf mappings for DD3.42.0

Author: adam-parker1

mappings/tf/globals.json

@@ -0,0 +1,5 @@
+{
+    "Comment": "Add any variables in here that are needed by your mappings",
+    "Templating": "These can be used for substitution in the signal names",
+    "Hello": "World"
+}

mappings/tf/mappings.json

@@ -0,0 +1,26 @@
+{
+    "ids_properties/homogeneous_time": {
+        "MAP_TYPE": "VALUE",
+        "VALUE": 0
+    },
+    "r0": {
+        "MAP_TYPE": "VALUE",
+        "VALUE": 2.96
+    },
+    "b_field_phi_vacuum_r/data": {
+        "MAP_TYPE": "PLUGIN",
+        "PLUGIN": "MDSPLUS",
+        "ARGS": {
+            "signal": "_sig=jet(\"PPF/MAGC/BVAC\"% {{ shot }})"
+        },
+        "SCALE": "2.96",
+        "COMMENT": "r0 * B0"
+    },
+    "b_field_phi_vacuum_r/time": {
+        "MAP_TYPE": "PLUGIN",
+        "PLUGIN": "MDSPLUS",
+        "ARGS": {
+            "signal": "_sig=jet(\"PPF/MAGC/BVAC\"% {{ shot }}); dim_of(_sig)"
+        }
+    }
+}