feat: add kill process functionality to deployments

- Implemented a new mutation to kill a running deployment process by its PID.
- Updated the deployment schema to include a PID field.
- Enhanced the deployment service to handle process termination and status updates.
- Modified the deployment scripts to echo PID and schedule ID for better tracking.
- Added error handling for the kill process operation.

packages/server/src/db/schema/deployment.ts

@@ -31,6 +31,7 @@ export const deployments = pgTable("deployment", {
 	description: text("description"),
 	status: deploymentStatus("status").default("running"),
 	logPath: text("logPath").notNull(),
+	pid: text("pid"),
 	applicationId: text("applicationId").references(
 		() => applications.applicationId,
 		{ onDelete: "cascade" },