Update doc and showcase (#135)

* feat(params.toml): enable analytics and configure Umami Analytics

Enable analytics by setting `enable` to `true` in the `[analytics]` section of the `params.toml` file. Also, configure Umami Analytics by providing the `data_website_id`, `src`, and `data_domains` values.

* feat(404.html): replace hardcoded "404 page not found" text with translated version to improve localization

* feat(README.md): add README.md file with information about the Bridget theme and its features
feat(getStarted.md): add getStarted.md file with instructions on how to get started with the Bridget theme, including installation and content management instructions

* chore: add screenshot and thumbnail

* chore(theme.toml): update theme info

* docs(README.md): update Features section heading to be singular for consistency
docs(README.md): add thumbnail image to README for visual representation of the theme
docs(README.md): add link to live demo site for users to see the theme in action
docs(README.md): update link to getting started documentation for clarity
docs(README.md): update wording in Features section for better readability

README.md

@@ -6,11 +6,17 @@ Bridget is a minimal [Hugo](https://gohugo.io) theme designed for photographers
 
 It’s based on the https://github.com/tylermcrobert/bridget-pictures-www.
 
+![thumbnail](images/tn.jpg)
+
+## [Demo Site](https://bridget-demo.sped0nwen.com)
+
+To see this theme in action, here is a live [demo site](https://bridget-demo.sped0nwen.com) which is rendered with **Bridget** theme.
+
 ## Getting Started
 
 Head to this [documentation](https://github.com/Sped0n/bridget/blob/main/doc/getStarted.md) for a complete guidance to get started with the Bridget theme.
 
-## Feature
+## Features
 
 - **Blazingly fast**: 99/100 on mobile and 100/100 on desktop in [Google PageSpeed Insights](https://developers.google.com/speed/pagespeed/insights)