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

cmd/tendermint/commands/version.go

@@ -13,6 +13,6 @@ var VersionCmd = &cobra.Command{
 	Use:   "version",
 	Short: "Show version info",
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println(version.TMCoreSemVer)
+		fmt.Println(version.TMVersion)
 	},
 }