Integrate SP auctions in webapp deployment flow (#950)

Part of [Service provider auctions for web deployments](https://www.notion.so/Service-provider-auctions-for-web-deployments-104a6b22d47280dbad51d28aa3a91d75) and #948

- Add a command `publish-deployment-auction` to create and publish an app deployment auction
- Add a command `handle-deployment-auction` to handle auctions on deployer side
- Update `request-webapp-deployment` command to allow using an auction id in deployment requests
- Update `deploy-webapp-from-registry` command to handle deployment requests with auction
- Add a command `request-webapp-undeployment` to request an application undeployment

Reviewed-on: #950
Reviewed-by: ashwin <ashwin@noreply.git.vdb.to>
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack_orchestrator/data/stacks/package-registry/README.md

@@ -27,3 +27,25 @@ The Package Registry Stack supports a build environment that requires a package
   ```
 
 * The local gitea registry can now be accessed at <http://localhost:3000> (the username and password can be taken from the deployment logs)
+
+* Configure the hostname `gitea.local`:
+
+  Update `/etc/hosts`:
+
+  ```bash
+  sudo nano /etc/hosts
+
+  # Add the following line
+  127.0.0.1       gitea.local
+  ```
+
+  Check resolution:
+
+  ```bash
+  ping gitea.local
+
+  PING gitea.local (127.0.0.1) 56(84) bytes of data.
+  64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.147 ms
+  64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.033 ms
+  ...
+  ```