Remove bob submodule, add arcgis.user

I had to remove the submodule because of the go bug at
https://github.com/golang/go/issues/77196
I found the bug because of a bug in bob itself
https://github.com/stephenafamo/bob/issues/610
This was because I'm trying to save data about the Arcgis user for use
in determining if I can set up hooks to avoid the polling for data
changes.

db/dberrors/arcgis.user_.bob.go

@@ -0,0 +1,17 @@
+// Code generated by BobGen psql v0.42.1. DO NOT EDIT.
+// This file is meant to be re-generated in place and/or deleted at any time.
+
+package dberrors
+
+var ArcgisUserErrors = &arcgisuserErrors{
+	ErrUniqueUser_Pkey: &UniqueConstraintError{
+		schema:  "arcgis",
+		table:   "user_",
+		columns: []string{"id"},
+		s:       "user__pkey",
+	},
+}
+
+type arcgisuserErrors struct {
+	ErrUniqueUser_Pkey *UniqueConstraintError
+}