feat(platform): Agent Store V2 (#8874)

# 🌎 Overview

AutoGPT Store Version 2 expands on the Pre-Store by enhancing agent
discovery, providing richer content presentation, and introducing new
user engagement features. The focus is on creating a visually appealing
and interactive marketplace that allows users to explore and evaluate
agents through images, videos, and detailed descriptions.

### Vision

To create a visually compelling and interactive open-source marketplace
for autonomous AI agents, where users can easily discover, evaluate, and
interact with agents through media-rich listings, ratings, and version
history.

### Objectives

📊 Incorporate visuals (icons, images, videos) into agent listings.
⭐ Introduce a rating system and agent run count.
🔄 Provide version history and update logs from creators.
🔍 Improve user experience with advanced search and filtering features.

### Changes 🏗️

<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

#### For code changes:
- [ ] I have clearly listed my changes in the PR description
- [ ] I have made a test plan
- [ ] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [ ] ...

<details>
  <summary>Example test plan</summary>
  
  - [ ] Create from scratch and execute an agent with at least 3 blocks
- [ ] Import an agent from file upload, and confirm it executes
correctly
  - [ ] Upload agent to marketplace
- [ ] Import an agent from marketplace and confirm it executes correctly
  - [ ] Edit an agent from monitor, and confirm it executes correctly
</details>

#### For configuration changes:
- [ ] `.env.example` is updated or already compatible with my changes
- [ ] `docker-compose.yml` is updated or already compatible with my
changes
- [ ] I have included a list of my configuration changes in the PR
description (under **Changes**)

<details>
  <summary>Examples of configuration changes</summary>

  - Changing ports
  - Adding new services that need to communicate with each other
  - Secrets or environment variable changes
  - New or infrastructure changes such as databases
</details>

---------

Co-authored-by: Bently <tomnoon9@gmail.com>
Co-authored-by: Aarushi <aarushik93@gmail.com>

.gitignore

@@ -173,4 +173,6 @@ LICENSE.rtf
 autogpt_platform/backend/settings.py
 /.auth
 /autogpt_platform/frontend/.auth
-.test-contents
+
+*.ign.*
+.test-contents