Add Deep Space 2G4 RX target (#211)

Author: pkendall64

targets.json

@@ -837,6 +837,20 @@
             }
         }
     },
+    "deepspace": {
+        "name": "Deep Space",
+        "rx_2400": {
+            "nano": {
+                "product_name": "DEEPSPACE 2.4GHz Nano 100mw RX",
+                "lua_name": "DS 2G4 Nano RX",
+                "layout_file": "Generic C3 LR1121.json",
+                "upload_methods": ["uart", "wifi", "betaflight"],
+                "min_version": "3.5.0",
+                "platform": "esp32-c3",
+                "firmware": "Unified_ESP32C3_LR1121_RX"
+            }
+        }
+    },
     "diy": {
         "name": "DIY devices",
         "tx_900": {