version: revert version through ldflag only (#6494)

## Description

Add version back to versions, but allow it to be overridden via a ldflag.

Reason:

Many users are not setting the ldflag causing issues with tooling that relies on it (cosmjs)

closes #6488

cc @webmaster128

tools/tm-signer-harness/main.go

@@ -185,7 +185,7 @@ func main() {
 		}
 		extractKey(flagTMHome, flagKeyOutputPath)
 	case "version":
-		fmt.Println(version.TMCoreSemVer)
+		fmt.Println(version.TMVersion)
 	default:
 		fmt.Printf("Unrecognized command: %s\n", flag.Arg(0))
 		os.Exit(1)