Tests(sigmatch): Add tests for overloaded symbols for varargs[typed]

This is only for macros as of now becasue I don't know what to do about
non macro routines

tests/compiler/tsigmatch.nim

@@ -0,0 +1,23 @@
+discard """
+  nimout: '''nnkClosedSymChoice
+nnkSym
+'''
+"""
+# import sequils
+
+import macros
+
+# block testVarargsOverloadedSymbolResolution:
+# 
+#   echo @[1, 2, 3].map(len)
+
+block testTypedVarargsOverloadedSymbolResolution:
+
+  macro typedVarargs(x: varargs[typed]) =
+    echo x[0].kind
+
+  macro typedSingle(x: typed) =
+    echo x.kind
+
+  typedSingle(`@`)
+  typedVarargs(`@`)