Add Cargo build system

Author: jhasse

Cargo.sublime-build

@@ -0,0 +1,12 @@
+{
+    "cmd": ["cargo", "build"],
+    "file_regex": "^(.*?):([0-9]+):([0-9]+):\\s[0-9]+:[0-9]+\\s(.*)$",
+    "syntax": "Packages/Makefile/Make.build-language",
+
+    "variants": [
+        {
+            "cmd": ["cargo", "run"],
+            "name": "Run"
+        }
+    ]
+}