Repr v2 progress (#13268)

* progress on repr_v2

* repr progress

* add ref objects with distrinct

* fix failing tests

tests/arc/trepr.nim

@@ -0,0 +1,34 @@
+discard """
+  cmd: "nim c --gc:arc $file"
+  nimout: '''(a: true, n: doAssert)
+Table[system.string, trepr.MyType](data: @[], counter: 0)
+nil
+'''
+"""
+import tables
+
+type
+  NimSym = distinct NimNode
+  MyType = tuple
+    a: bool
+    n: NimSym
+
+proc myproc(t: MyType) =
+  echo repr(t)
+
+proc myproc2(t: MyType) =
+  var x = Table[string, t]()
+  echo repr(x)
+
+proc myproc3(t: MyType) =
+  var x: TableRef[string, t]
+  echo repr(x)
+
+
+macro dumpSym(a: typed) =
+  myproc((a: true, n: NimSym(a)))
+  myproc2((a: true, n: NimSym(a)))
+  myproc3((a: true, n: NimSym(a)))
+
+dumpSym(doAssert)
+