feat: Add support for TLP marking in metadata - fix protobuf enum (fixes CycloneDX#595)

Author: anthonyharrison

schema/bom-1.7.proto

@@ -679,15 +679,15 @@ message Swid {
 
 enum Tlp {
   // Default
-  CLEAR = 0;
+  TLP_CLEAR = 0;
   // Limited distribution but can be shared within a community.
-  GREEN = 1;
+  TLP_GREEN = 1;
   // Limited distribution but can be shared within an organization and with clients
-  AMBER = 2;
+  TLP_AMBER = 2;
   // Limited distribution but can be shared within an organization.
-  AMBER_AND_STRICT = 3;
+  TLP_AMBER_AND_STRICT = 3;
   // Restricted distribution to individual recipients and must not be shared.
-  RED = 4;
+  TLP_RED = 4;
 }
 
 // Specifies a tool (manual or automated).