Initial clean-up and reorganization to Diataxis of all packages

[kennedy-mindermann]

Documentation for all packages needs to be cleaned up and reorganized to follow the Diataxis framework. This includes:

• Upgrading to Documenter > 1.0 and resolving errors to enforce strict compilation
• Adding .md formatting to the formatter script
• Proof-reading for formatting and misformatted code references
• Adding hyperlinks everywhere

Packages that need to be reorganized:

• PowerSystems
• PowerFlows
• PowerSimulations
• PowerSimulationsDynamics
• PowerNetworkMatrices
• SiennaPRASInterface
• InfrastructureSystems
• PowerSystemCaseBuilder
• HydroPowerSimulations
• PowerAnalytics
• PowerGraphics
• HybridSystemSimulations