Merge branch 'dev/hafizh' into 'feat/BE/Sprint-6'

feat(BE-308,309): utility document and implementation s3 bucket

See merge request mbugroup/lti-api!78

internal/database/migrations/20251202103838_create_document_table.down.sql

@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS documents_documentable_polymorphic;
+DROP TABLE IF EXISTS documents;

internal/database/migrations/20251202103838_create_document_table.up.sql

@@ -0,0 +1,14 @@
+CREATE TABLE documents (
+    id BIGSERIAL PRIMARY KEY,
+    documentable_type VARCHAR(50) NOT NULL,
+    documentable_id BIGINT NOT NULL,
+    type VARCHAR(50) NOT NULL,
+    path VARCHAR(50) NOT NULL,
+    name VARCHAR(50) NOT NULL,
+    ext VARCHAR(50) NOT NULL,
+    size NUMERIC(15, 3) NOT NULL,
+    created_by BIGINT REFERENCES users (id) ON DELETE RESTRICT ON UPDATE CASCADE,
+    created_at TIMESTAMPTZ DEFAULT now()
+);
+
+CREATE INDEX documents_documentable_polymorphic ON documents (documentable_type, documentable_id);