feat(BE-115,116,117): implement chickin CRUD, approve logic, and stock availabilit

internal/database/migrations/20251018120649_create_project_chick_ins_table.up.sql

@@ -0,0 +1,21 @@
+CREATE TABLE project_chickins (
+    id BIGSERIAL PRIMARY KEY,
+    project_floc_id BIGINT NOT NULL,
+    chick_in_date DATE NOT NULL,
+    quantity NUMERIC(15, 3) NOT NULL,
+    note TEXT,
+    created_by BIGINT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT now(),
+    updated_at TIMESTAMPTZ DEFAULT now(),
+    deleted_at TIMESTAMPTZ
+);
+
+CREATE INDEX idx_project_chickins_project_floc_id ON project_chickins (project_floc_id);
+
+CREATE INDEX idx_project_chickins_created_by ON project_chickins (created_by);
+
+ALTER TABLE project_chickins
+ADD CONSTRAINT fk_project_floc_id FOREIGN KEY (project_floc_id) REFERENCES project_flocks (id);
+
+ALTER TABLE project_chickins
+ADD CONSTRAINT fk_created_by FOREIGN KEY (created_by) REFERENCES users (id);