feat(tfgrid3deployer): add openwebui deployment example

- Adds a new example demonstrating deployment of OpenWebUI on the ThreeFold Grid using the `tfgrid3deployer` module.
- Provides detailed instructions and a README file for easy setup and execution.

Co-authored-by: mahmmoud.hassanein <mahmmoud.hassanein@gmail.com>

examples/threefold/tfgrid3deployer/open_webui_gw/open_webui_gw.vsh

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+#!/usr/bin/env -S v -gc none -no-retry-compilation -d use_openssl -enable-globals -cg run
+
+//#!/usr/bin/env -S v -gc none -no-retry-compilation -cc tcc -d use_openssl -enable-globals -cg run
+import freeflowuniverse.herolib.threefold.gridproxy
+import freeflowuniverse.herolib.threefold.tfgrid3deployer
+import freeflowuniverse.herolib.installers.threefold.griddriver
+import os
+import time
+
+griddriver.install()!
+
+v := tfgrid3deployer.get()!
+println('cred: ${v}')
+
+deployment_name := 'openwebui_example'
+mut deployment := tfgrid3deployer.new_deployment(deployment_name)!
+
+deployment.add_machine(
+	name:      'vm1'
+	cpu:       1
+	memory:    16
+	planetary: true
+	size:      100 // 10 gig
+	flist:     'https://hub.grid.tf/mariobassem1.3bot/docker.io-threefolddev-open_webui-latest.flist'
+)
+deployment.deploy()!
+
+vm1 := deployment.vm_get('vm1')!
+println('vm1 info: ${vm1}')
+
+deployment.add_webname(
+	name:                  'openwebui'
+	backend:               'http://${vm1.wireguard_ip}:8080'
+	use_wireguard_network: true
+)
+deployment.deploy()!
+
+gw1 := deployment.webname_get('openwebui')!
+println('gw info: ${gw1}')
+
+// tfgrid3deployer.delete_deployment(deployment_name)!

examples/threefold/tfgrid3deployer/open_webui_gw/readme.md

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+# OpenWebUI Deployment on ThreeFold Grid
+
+## Overview
+This script automates the deployment of an OpenWebUI instance on the ThreeFold Grid using the `tfgrid3deployer` module. It sets up a virtual machine (VM), configures networking, and assigns a webname for easy access.
+
+## Requirements
+- V compiler installed
+- OpenSSL support enabled
+- herolib dependencies:
+  - `freeflowuniverse.herolib.threefold.gridproxy`
+  - `freeflowuniverse.herolib.threefold.tfgrid3deployer`
+  - `freeflowuniverse.herolib.installers.threefold.griddriver`
+
+## Installation
+Ensure you have the required dependencies installed. The script will automatically install the `griddriver` before proceeding.
+
+## Usage
+Run the script using the following command:
+
+```sh
+./open_webui_gw.vsh
+```
+
+### Script Execution Steps
+1. Installs the necessary ThreeFold Grid driver.
+2. Retrieves credentials for deployment.
+3. Creates a new deployment named `openwebui_example`.
+4. Adds a VM with the following specifications:
+   - 1 CPU
+   - 16GB RAM
+   - 100GB storage
+   - Uses planetary networking
+   - Deploys OpenWebUI from the ThreeFold Hub.
+5. Deploys the VM.
+6. Retrieves VM information.
+7. Configures a webname (`openwebui`) pointing to the VM's backend.
+8. Deploys the webname for public access.
+9. Retrieves and displays webname gateway details.
+
+## Cleanup
+To delete the deployment, run the following line in the script:
+
+```v
+tfgrid3deployer.delete_deployment(deployment_name)!
+```
+
+
+## Gateway Information
+The gateway points to the WireGuard IP of the VM on port 8080, which is the port that the OpenWebUI server is listening on.
+
+## Notes
+- Ensure you have a valid ThreeFold Grid account and necessary permissions to deploy resources.
+- Adjust VM specifications based on your requirements.