Implemented initial robot state and parsing

include/ur_modern_driver/ur/messages.h

@@ -0,0 +1,20 @@
+#pragma once
+
+class MessageBase {
+public:
+    virtual bool parse_with(BinParser &bp) = 0;
+
+    uint64_t timestamp;
+    uint8_t source;
+};
+
+class VersionMessage : public MessageBase {
+public:
+    bool parse_with(BinParser &bp);
+
+    std::string project_name;
+    uint8_t major_version;
+    uint8_t minor_version;
+    int32_t svn_version;
+    std::string build_date;
+}