Silverback 0.6.3

Changes

• docs: add managing userguide @dtdang (#161)
• chore: update pin for ApePay @Ninjagod1251 (#160)
• docs: update cli reference @dtdang (#159)
• feat: add cluster update @dtdang (#158)
• fix: silverback build missing files during generate @johnson2427 (#151)
• fix: update workspaces @dtdang (#156)
• feat: add workspace subcommands @dtdang (#148)
• docs: remove ape prefix @dtdang (#155)
• docs: fix docs cli references @dtdang (#154)
• docs: delete unneeded build_docs.py file @antazoey (#152)

Special thanks to: @Ninjagod1251, @antazoey, @dtdang and @johnson2427