docs: parameterise documentation site

[huynguyen-hl]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 🧑‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI
• 📦 Chore (Release)
• ⏩ Revert

Description

This PR aims to parameterize the specification site's branding elements and external links using environment variables with default placeholders. Now, the specs site will have a default mode, serving a generic configuration instead of specific UNTP information.

Related Tickets & Documents

https://github.com/gs-gs/fa-ag-trace/issues/962

Mobile & Desktop Screenshots/Recordings

Builds and serves the specification site using the default configuration:

---

Builds and serves the specification site using a custom configuration (custom environment variables):

SITE_TITLE=UN Transparency Protocol
SITE_TAGLINE=A comprehensive suite of tools for testing conformance to the UNTP Specification.
SITE_LOGO_URL=img/logo.svg
ORGANIZATION_NAME=uncefact
PROJECT_NAME=tests-untp
FAVICON_URL=img/favicon.ico
HERO_IMAGE_URL=img/un-crm-social-card.png
HERO_IMAGE_ALT=Hero image alt
NAVBAR_TITLE=TP
EDIT_URL_BASE=https://github.com/uncefact/tests-untp/tree/next/documentation
REPOSITORY_LINK=https://github.com/uncefact/tests-untp
SLACK_COMMUNITY_LINK=https://join.slack.com/t/uncefact/shared_invite/zt-1d7hd0js1-sS1Xgk8DawQD9VgRvy1QHQ
SLACK_CHANNEL_LINK=https://app.slack.com/client/T03KNUD7LHZ/C05R8DD2AKZ
ALT_TEXT_IMAGES=Generic image alt text
EXTENSION_DOCS_LINK=https://uncefact.github.io/spec-untp/docs/extensions/
FOOTER_TITLE=UN Transparency Protocol
FOOTER_TEXT=United Nations Economic Commission for Europe
FOOTER_SPEC_TITLE= UNTP Specification
FOOTER_SPEC_LINK=https://uncefact.github.io/spec-untp/

Added tests?

• 👍 yes
• 🙅 no, because they aren't needed
• 🙋 no, because I need help

Added to documentation?

• 📖 Mock App docs site
• 📜 README.md
• 📕 storybook
• 🙅 no documentation needed

[github-actions]

Code Coverage Report

Lines	Statements	Branches	Functions
	81.79% (3572/4367)	69.1% (859/1243)	73.54% (417/567)

Title	Lines	Statements	Branches	Functions
All packages		81.79% (3572/4367)	69.1% (859/1243)	73.54% (417/567)
Components		84.03% (516/614)	69.36% (120/173)	77.23% (95/123)
Mock app		71.95% (372/517)	53.23% (74/139)	68.14% (77/113)
Services		79.29% (1038/1309)	64.88% (255/393)	75.71% (106/140)
UNTP test suite		85.75% (1090/1271)	81.35% (144/177)	67.21% (41/61)
VC test suite		100% (20/20)	100% (2/2)	100% (4/4)
UNTP Playground		84.92% (569/670)	73.68% (266/361)	75.38% (98/130)