Add usage_count columns to catalog tables

Adds 'last_30_day_usage_count' column to
'catalog_resources' and 'catalog_resource_components'.
The column is to be later populated by a daily worker
that aggregates the last 30 days of data. The usage
count is currently defined as the number of unique
projects that included the respective component in a
pipeline.

Changelog: added

db/migrate/20240318160548_add_usage_count_to_catalog_resources.rb

+# frozen_string_literal: true
+
+class AddUsageCountToCatalogResources < Gitlab::Database::Migration[2.2]
+  milestone '16.11'
+
+  def change
+    add_column :catalog_resources, :last_30_day_usage_count, :integer, null: false, default: 0
+    add_column :catalog_resources, :last_30_day_usage_count_updated_at, :datetime_with_timezone,
+      null: false, default: '1970-01-01'
+  end
+end

db/migrate/20240318160612_add_usage_count_to_catalog_resource_components.rb

+# frozen_string_literal: true
+
+class AddUsageCountToCatalogResourceComponents < Gitlab::Database::Migration[2.2]
+  milestone '16.11'
+
+  def change
+    add_column :catalog_resource_components, :last_30_day_usage_count, :integer, null: false, default: 0
+    add_column :catalog_resource_components, :last_30_day_usage_count_updated_at, :datetime_with_timezone,
+      null: false, default: '1970-01-01'
+  end
+end

db/schema_migrations/20240318160548

+98454d2080cba05c35033694887f7dbb68965015e19e323e35b48bf6b1c0c893
\ No newline at end of file

db/schema_migrations/20240318160612

+77f42280c79176fa52da6f202067dc67128c2f3fa384d1d84624938312325fc7
\ No newline at end of file

db/structure.sql

@@ -5639,6 +5639,8 @@ CREATE TABLE catalog_resource_components (
     name text NOT NULL,
     path text,
     spec jsonb DEFAULT '{}'::jsonb NOT NULL,
+    last_30_day_usage_count integer DEFAULT 0 NOT NULL,
+    last_30_day_usage_count_updated_at timestamp with time zone DEFAULT '1970-01-01 00:00:00+00'::timestamp with time zone NOT NULL,
     CONSTRAINT check_a76bfd47fe CHECK ((char_length(path) <= 255)),
     CONSTRAINT check_ddca729980 CHECK ((char_length(name) <= 255))
 );
@@ -5685,7 +5687,9 @@ CREATE TABLE catalog_resources (
     description text,
     visibility_level integer DEFAULT 0 NOT NULL,
     search_vector tsvector GENERATED ALWAYS AS ((setweight(to_tsvector('english'::regconfig, (COALESCE(name, ''::character varying))::text), 'A'::"char") || setweight(to_tsvector('english'::regconfig, COALESCE(description, ''::text)), 'B'::"char"))) STORED,
-    verification_level smallint DEFAULT 0
+    verification_level smallint DEFAULT 0,
+    last_30_day_usage_count integer DEFAULT 0 NOT NULL,
+    last_30_day_usage_count_updated_at timestamp with time zone DEFAULT '1970-01-01 00:00:00+00'::timestamp with time zone NOT NULL
 );
 CREATE SEQUENCE catalog_resources_id_seq