SecretsManager: Introduce keeper store (#105557)

* SecretsManager: Introduce secret database wrapper

Co-authored-by: PoorlyDefinedBehaviour <brunotj2015@hotmail.com>
Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>
Co-authored-by: Dana Axinte <53751979+dana-axinte@users.noreply.github.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

* SecretsManager: Introduce db migrator with keeper table

Co-authored-by: PoorlyDefinedBehaviour <brunotj2015@hotmail.com>
Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>
Co-authored-by: Dana Axinte <53751979+dana-axinte@users.noreply.github.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

* SecretsManager: Introduce keeper store

Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>
Co-authored-by: Dana Axinte <53751979+dana-axinte@users.noreply.github.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

* new line

* without query listByNameSecureValue

* remove unused extractSecureValues for now

* SecretsManager: Add keeper integration tests

Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>
Co-authored-by: Dana Axinte <53751979+dana-axinte@users.noreply.github.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

---------

Co-authored-by: PoorlyDefinedBehaviour <brunotj2015@hotmail.com>
Co-authored-by: Leandro Deveikis <leandro.deveikis@gmail.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

pkg/storage/secret/metadata/testdata/postgres--keeper_read-read.sql

@@ -0,0 +1,18 @@
+SELECT
+  "guid",
+  "name",
+  "namespace",
+  "annotations",
+  "labels",
+  "created",
+  "created_by",
+  "updated",
+  "updated_by",
+  "description",
+  "type",
+  "payload"
+FROM
+  "secret_keeper"
+WHERE "namespace" = 'ns' AND
+  "name" = 'name'
+;