Add release_phase column to rule_type table. (#4249)

The new `release_phase` column of `rule_type` table contains release
phase information about the rule type, being one of `alpha`, `beta`,
`ga`, or `deprecated`. The available states are defined as an
enumerated type.

Fixes #4242
Fixes #4243

database/migrations/000100_rule_type_add_state_column.down.sql

@@ -0,0 +1,20 @@
+-- Copyright 2024 Stacklok, Inc
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--      http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+BEGIN;
+
+ALTER TABLE rule_type DROP COLUMN release_phase;
+DROP TYPE release_status;
+
+COMMIT;

database/migrations/000100_rule_type_add_state_column.up.sql

@@ -0,0 +1,24 @@
+-- Copyright 2024 Stacklok, Inc
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--      http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+BEGIN;
+
+CREATE TYPE release_status AS ENUM ('alpha', 'beta', 'ga', 'deprecated');
+ALTER TABLE rule_type ADD COLUMN release_phase release_status;
+UPDATE rule_type SET release_phase = 'alpha' WHERE release_phase IS NULL;
+ALTER TABLE rule_type
+  ALTER COLUMN release_phase SET DEFAULT 'ga',
+  ALTER COLUMN release_phase SET NOT NULL;
+
+COMMIT;