Adds disposal mailing units (again) (#7630)

Resources/Textures/Structures/Piping/disposal.rsi/meta.json

@@ -16,6 +16,15 @@
                 ]
             ]
         },
+        {
+            "name": "conmailing",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
         {
             "name": "conpipe-c",
             "directions": 4,
@@ -187,6 +196,15 @@
                 ]
             ]
         },
+        {
+            "name": "mailing",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
         {
             "name": "disposal-charging",
             "directions": 1,
@@ -196,6 +214,15 @@
                 ]
             ]
         },
+        {
+            "name": "mailing-charging",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
         {
             "name": "disposal-flush",
             "directions": 1,
@@ -213,6 +240,23 @@
                 ]
             ]
         },
+        {
+            "name": "mailing-flush",
+            "directions": 1,
+            "delays": [
+                [
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.1,
+                    0.5,
+                    0.1,
+                    0.1,
+                    0.1
+                ]
+            ]
+        },
         {
             "name": "dispover-charge",
             "directions": 1,
@@ -242,6 +286,15 @@
                 ]
             ]
         },
+        {
+            "name": "mailover-handle",
+            "directions": 1,
+            "delays": [
+                [
+                    1.0
+                ]
+            ]
+        },
         {
             "name": "dispover-ready",
             "directions": 1,