merge BuildMode into SuccessX, remove code duplication w drnim, add useful info to successx, add gc to compilesettings (#18252)

* merge BuildMode into SuccessX, add more info

* refactor duplicated with drnim

* fixup

* address comment

drnim/drnim.nim

@@ -1205,24 +1205,7 @@ proc mainCommand(graph: ModuleGraph) =
   registerPass graph, semPass
   compileProject(graph)
   if conf.errorCounter == 0:
-    # xxx deduplicate with D20210419T170230
-    let mem =
-      when declared(system.getMaxMem): formatSize(getMaxMem()) & " peakmem"
-      else: formatSize(getTotalMem()) & " totmem"
-    let loc = $conf.linesCompiled
-    let build = if isDefined(conf, "danger"): "Dangerous Release build"
-                elif isDefined(conf, "release"): "Release build"
-                else: "***SLOW, DEBUG BUILD***; -d:release makes code run faster."
-    let sec = formatFloat(epochTime() - conf.lastCmdTime, ffDecimal, 3)
-    let project = if conf.filenameOption == foAbs: $conf.projectFull else: $conf.projectName
-    rawMessage(conf, hintSuccessX, [
-      "loc", loc,
-      "sec", sec,
-      "mem", mem,
-      "project", project,
-      "output", ""
-      ])
-    rawMessage(conf, hintBuildMode, build)
+    genSuccessX(graph.config)
 
 proc processCmdLine(pass: TCmdLinePass, cmd: string; config: ConfigRef) =
   var p = parseopt.initOptParser(cmd)