WIP: [noticket] Add basic shopware 6 plugin#8

Draft

sobyte wants to merge 2 commits intomasterfrom feature/shopware-6

+651-1,468

Commits on Mar 21, 2020

[noticket] Add basic shopware 6 plugin with command to disable first run wizard
Jan-Erik Spreng
committed

Commits on Aug 19, 2020

[noticket] Add more commands. Remove outdated SW5 files.
t2oh4e
committed