Add languages list

docs/programming/web/tech-stack/languages.md

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+title: 'Programming languages'
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+
+# Programming languages
+
+## PHP
+
+PHP is used by multiple open source content management systems and is very easy
+to deploy on shared retail hosting.
+
+- CMS
+  - Drupal
+  - Wordpress
+- API
+  - Laravel
+  - Symfony
+
+## JavaScript
+
+JavaScript is necessary for coding UI in the browser.
+
+- Web app frontend
+- Interactive quicktext templates for Thunderbird
+
+## HTML/CSS
+
+Essential for creating web UIs.
+
+- CMS
+- SPA
+- Static sites
+
+## TypeScript
+
+I learned TypeScript to build web frontends on a language with a type system.
+
+- Single-page applications (React)
+- Static-site generators (Gatsby)
+
+## Python
+
+I learned Python as a general-purpose tool for automating work at my retail job.
+
+- API
+  - FileMaker Pro Advanced HTTP API, connecting to FM via ODBC driver
+- ETL
+  - Inventory data updater for Pronto Xi
+- Web scrapers
+  - Download product images from suppliers
+  - Scrape orders from commerce site with no API
+- Uptime monitor
+- Site backup manager
+- HTML generator
+
+## C#
+
+I learned C# to build a web API in a statically-typed, compiled language, and to
+learn the key lanuage behind .NET.
+
+## C
+
+I learned C to write embedded software and to study network programming.
+
+## Other languages:
+
+- Java: Mostly forgotten. Prefer C# and PHP for web backend.
+- C++: Don't like it; don't have a use for it.
+- Lua: Only know enough to configure Neovim.