go/pointer: create submodule

The pointer analysis is deprecated.
Once this module is tagged, we will delete it.
Clients will be able to use only the last version.

Updates golang/go#59676

Change-Id: If6e2214d964f0bbd1267634a1ad5c0d3166ecf0e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/499695
Run-TryBot: Alan Donovan <adonovan@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Alan Donovan <adonovan@google.com>

go/pointer/go.mod

@@ -0,0 +1,12 @@
+module golang.org/x/tools/go/pointer
+
+go 1.18 // tagx:compat 1.16
+
+require (
+	golang.org/x/sys v0.8.0
+	golang.org/x/tools v0.9.2
+)
+
+require golang.org/x/mod v0.10.0 // indirect
+
+replace golang.org/x/tools => ../../

go/pointer/go.sum

@@ -0,0 +1,5 @@
+golang.org/x/mod v0.10.0 h1:lFO9qtOdlre5W1jxS3r/4szv2/6iXxScdzjoBMXNhYk=
+golang.org/x/mod v0.10.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=