docs(readme): add Trendshift trending badge

[spomichter]

Problem

DimOS is #3 trending on GitHub — should show it off in the README.

Solution

Added Trendshift badge between the shields.io badge row and the nav links, centered in the header section.

Breaking Changes

None

How to Test

Check the README renders correctly on GitHub.

Contributor License Agreement

• I have read and approved the CLA

[greptile-apps]

Greptile Summary

Adds a Trendshift trending badge to the README header section, placed between the shields.io badge row and the navigation links. This is a documentation-only change with no code or behavioral impact.

• Added a centered Trendshift badge image linking to the project's Trendshift page
• Badge uses both HTML style and width/height attributes for consistent sizing across renderers

Confidence Score: 5/5

• This PR is safe to merge — it only adds a badge image to the README with no code changes.
• The change is a single-line documentation addition (a badge link/image) with zero risk to functionality, tests, or build processes.
• No files require special attention.

Important Files Changed

Filename	Overview
README.md	Adds a Trendshift trending badge image/link between the existing shields.io badges and the navigation links. No functional or rendering issues.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["README.md Header Section"] --> B["Banner Image"]
    B --> C["Shields.io Badges\n(Discord, Stars, Forks, etc.)"]
    C --> D["🆕 Trendshift Trending Badge"]
    D --> E["Navigation Links\n(Hardware, Installation, etc.)"]
    E --> F["Pre-Release Beta Notice"]

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_{Last reviewed commit: cfac2da}