Unified Storage: Add ListSinceModified to StorageBackend (#109697)

* WIP added ListSinceModified to StorageBackend interface

* fix compile time check

* Fix method name

* Fix naming

* fix the rest of the ListSinceModified names

* Uses resource key without name field

* get latest rv from resource_version. Update test.

* adds moar tests

* adds method stub for ListModifiedSince to other StorageBackend implementations

* adds dummy impl to noop storage backend for ListModifiedSince

* skip tests for badger kv backend for now

* fixes tests and adds badgerkv impl for ListModifiedSince

* add badger kv impl

* adds test for new query

* adds test data for new query

* adds ListModifiedSince stub to mockStorageBackend

* uncomment tests

* refactors ListModifiedSince to return an iter.seq2 and handles deduplication. Updates tests. Updates query result sorting.

* remove comments

* remove folder from query (dont need it, yet?)

* regen test queries

* updates test

* updates function comment

* use resourcepb.ResourceKey instead of ModifiedResourceKey

* wrap seq in single transaction. Rollback transaction after 30s if iterator never used. Only track last seen event. Formatting.

* skip TestListModifiedSince for kv backend

* use WatchEvent_Type for action type

* remove redundant fields from order by clause and regen test data for query

* remove redundant fields from order by clause and regen test data for query

pkg/storage/unified/sql/data/resource_history_list_since_modified.sql

@@ -0,0 +1,14 @@
+SELECT
+    {{.Ident "namespace"}},
+    {{.Ident "group"}},
+    {{.Ident "resource"}},
+    {{.Ident "name"}},
+    {{.Ident "resource_version"}},
+    {{.Ident "action"}},
+    {{.Ident "value"}}
+FROM resource_history
+WHERE {{.Ident "namespace" }} = {{.Arg .Namespace }}
+  AND {{.Ident "group" }} = {{.Arg .Group }}
+  AND {{.Ident "resource" }} = {{.Arg .Resource }}
+  AND {{.Ident "resource_version" }} > {{.Arg .SinceRv }} -- needs to be exclusive of the sinceRv
+ORDER BY {{.Ident "name" }} ASC, {{.Ident "resource_version" }} DESC