Add author profile for Chris Smith (#538)

## What this changes

Adds an author profile for Chris Smith at
`content/authors/chris-smith/_index.md`, with a tagline, links, and a
short bio. It uses the generated avatar.

## Why

Gilbert suggested an author bio when he merged #525, following the
"Adding Your Author Profile" section of CONTRIBUTING.md.

## Type of change

- [ ] Bug fix (non-breaking change that corrects incorrect behavior)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that changes existing behavior)
- [x] Chore / refactor / documentation (no behavior change)

## Additional notes

The slug matches the `authors:` name "Chris Smith" on the #525 article.
Content only, so the Pester, psake and changelog items don't apply.

Author: trucule

content/authors/chris-smith/_index.md

@@ -0,0 +1,15 @@
+---
+title: "Chris Smith"
+tagline: "Windows and Linux endpoint management, PowerShell automation, and ET Ducky"
+website: "https://etducky.com"
+github: "https://github.com/trucule"
+twitter: "https://x.com/trucule"
+---
+
+I'm a systems engineer with 15 years in IT operations, more than 10 of them in
+enterprise endpoint management on Windows and Linux. Most of my PowerShell goes
+into patching, event log analysis, and fleet scripting.
+
+I build [ET Ducky](https://etducky.com), an RMM that reads the kernel event
+stream on each endpoint (ETW on Windows, eBPF on Linux). My open source tools,
+including ProcDelta and ProviderExplorer, are on [GitHub](https://github.com/trucule).