Add global org flag

[stephahart]

Add a global --org/-o flag for all commands.

[codecov]

Codecov Report

❌ Patch coverage is 23.00000% with 77 lines in your changes missing coverage. Please review.
✅ Project coverage is 25.61%. Comparing base (17ccd79) to head (30d042d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/cmd/start/start.go	0.00%	18 Missing ⚠️
pkg/cmd/cmd.go	26.31%	14 Missing ⚠️
pkg/cmd/invite/invite.go	0.00%	9 Missing ⚠️
pkg/cmd/redeem/redeem.go	0.00%	9 Missing ⚠️
pkg/store/organization.go	40.00%	6 Missing and 3 partials ⚠️
pkg/cmd/grantssh/grantssh.go	0.00%	4 Missing ⚠️
pkg/cmd/register/register.go	0.00%	4 Missing ⚠️
pkg/cmd/revokessh/revokessh.go	0.00%	4 Missing ⚠️
pkg/cmd/ls/ls.go	66.66%	2 Missing and 1 partial ⚠️
pkg/cmd/org/org.go	0.00%	2 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #445      +/-   ##
==========================================
+ Coverage   24.67%   25.61%   +0.93%     
==========================================
  Files         134      134              
  Lines       18337    18267      -70     
==========================================
+ Hits         4525     4679     +154     
+ Misses      13335    13103     -232     
- Partials      477      485       +8     

Flag	Coverage Δ
Linux	25.61% <23.00%> (+0.93%)	⬆️

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