update readme's to make sure they work

[pbullhove]

•  dm-core ( how to make the example app running, link to dm-docs. )
• dm-core
• simpos (how to alias to dm-core, how to run simpos, link to dm-docs, link to pymtds)
• dm-cli ( list of available commands, when to use them. )
• perhaps import the dm-cli ReadMe in docosaurus (dm-docs) to the dm-cli repo, so that we DRY.
• dm-job ( how to make it run, when it's used etc. )
• dmss ( how to make it run .. what it is, )
• Create dm app. ( how to start, where to go to start development, with examples)