nim.cfg: now up to date with the Nimbus one

nim.cfg

@@ -1,12 +1,20 @@
---threads:on
---opt:speed
-
-# -d:"chronicles_sinks=json"
+@if release:
+  nimcache = "nimcache/release/$projectName"
+@else:
+  nimcache = "nimcache/debug/$projectName"
+@end
 
 @if windows:
+  # disable timestamps in Windows PE headers - https://wiki.debian.org/ReproducibleBuilds/TimestampsInPEBinaries
+  --passL:"-Wl,--no-insert-timestamp"
   # increase stack size
   --passL:"-Wl,--stack,8388608"
   # https://github.com/nim-lang/Nim/issues/4057
   --tlsEmulation:off
 @end
 
+--threads:on
+--opt:speed
+--excessiveStackTrace:on
+-d:metrics # enable metric collection
+