Mining things [part 2] (#21953)

* mining-window (Diagonal)

* mining-airlock "glass"

Resources/Textures/Structures/Windows/mining_diagonal.rsi/meta.json

@@ -0,0 +1,17 @@
+{
+    "version": 1,
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Made by NULL882 (github)",
+    "states": [
+        {
+            "name": "state0"
+        },
+        {
+            "name": "state1"
+        }
+    ]
+}