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/testdata/mysql--resource_history_list_since_modified-single path.sql

@@ -0,0 +1,14 @@
+SELECT
+    `namespace`,
+    `group`,
+    `resource`,
+    `name`,
+    `resource_version`,
+    `action`,
+    `value`
+FROM resource_history
+WHERE `namespace` = 'ns'
+  AND `group` = 'group'
+  AND `resource` = 'res'
+  AND `resource_version` > 10000 -- needs to be exclusive of the sinceRv
+ORDER BY `name` ASC, `resource_version` DESC

pkg/storage/unified/sql/testdata/postgres--resource_history_list_since_modified-single path.sql

@@ -0,0 +1,14 @@
+SELECT
+    "namespace",
+    "group",
+    "resource",
+    "name",
+    "resource_version",
+    "action",
+    "value"
+FROM resource_history
+WHERE "namespace" = 'ns'
+  AND "group" = 'group'
+  AND "resource" = 'res'
+  AND "resource_version" > 10000 -- needs to be exclusive of the sinceRv
+ORDER BY "name" ASC, "resource_version" DESC

pkg/storage/unified/sql/testdata/sqlite--resource_history_list_since_modified-single path.sql

@@ -0,0 +1,14 @@
+SELECT
+    "namespace",
+    "group",
+    "resource",
+    "name",
+    "resource_version",
+    "action",
+    "value"
+FROM resource_history
+WHERE "namespace" = 'ns'
+  AND "group" = 'group'
+  AND "resource" = 'res'
+  AND "resource_version" > 10000 -- needs to be exclusive of the sinceRv
+ORDER BY "name" ASC, "resource_version" DESC