Resolve "Follow-on Follow-on Docs Design update"

Closes issue #1272 (closed)

In a further effort to consolidate and streamline docs I propose:

• move ./Packages.md to docs/packages.md
• add .pages to each directory in docs that needs nav re-mapping, this allows for mkdocs awesome pages plugin to better build the site navigation. I have code written / some boilerplate in bb-docs v2, but I want to get away from that and consolidate all the docs sources of truth within Big Bang's core repo. This is because mkdocs (and any other docs generator) will use the first # (H1 tag) on a document to build its navigation title; ex: docs/.../sample-prod-config.md will show up as Big Bang Production Configuration on the site navigation when a much better title would be Sample Prod Config.
• Fix file naming conventions to be lowercase and dash(-) as word separators
• Fix page titles
• Restructure docs/understanding-bigbang/package-architecture to bring packages out of individual dirs

For easier viewing of the improved navigation, explore this --> https://bb-docs-compiler.vercel.app/

^ built w/ bb-docs-compiler v2.0

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assigned to @razzle

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changed title from Draft: Resolve "DRAFT: Follow-on Follow-on Docs Design update" to Draft: Resolve "Follow-on Follow-on Docs Design update"

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• 3bf9a8f3 - move Packages.md, add .pages to docs/developer/**, add root docs/.pages
• 216ab24b - fix file names
• 4a1cc9ad - bulk rename package-architecture files
• b6f786ff - fix packages.md links
• eaae824c - remove Big Bang from H1
• 63947a05 - remove Big Bang from H1
• 552cb64f - add .pages where needed into docs/guides
• 626c90bb - fix links
• 49cf8155 - add .pages where needed into docs/prereq, move pod-usage-in-grafana to using-bigbang
• 6b30afca - add .pages where needed into docs/understanding-bigbang
• a75b87ba - fix links
• 688888f1 - remove refs to charter

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• 93886c6e - fix links

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• 06e83d7d - Mattermost: Add grafana dashboard
• fed13826 - Updated velero csi apiversion
• 4c8b41a1 - Istio: Remove unnecessary fluentd sidecar exception
• 62d2de7c - Feat: updating flux observability
• bf6e67ce - 1.40 cherrypick

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requested review from @micah.nagel, @ryan.thompson.44, and @tsiddique1

marked this merge request as ready

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• 8600effb - Nexus architecture documentation
• abd1ff7e - move nexus architecture

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• abd1ff7e...fe2eb70d - 12 commits from branch master
• 89088c20 - Merge branch 'master' into 1272-draft-follow-on-follow-on-docs-design-update
• 15dbbec5 - move nexus architecture

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