add help text to environment command (railwayapp#142)

* add help text to environment command

* Update help text

Co-authored-by: Jake Cooper <jake.elijah.cooper@gmail.com>

Co-authored-by: Jake Cooper <jake.elijah.cooper@gmail.com>

Send Version with Panic (railwayapp#143)

* Send Version with Panic

* Update controller/user.go

Consolidate selection prompts into helper (railwayapp#139)

allow linking projects by name (railwayapp#138)

environment command improvements (railwayapp#135)

* allow switching to existing environment using name

* fix cursor in environment selector

* fix cursor for add cmd

* replace check emoji with emoji from promptui

Write to staging config (railwayapp#137)

Support Staging Mode (railwayapp#136)

Fix Link Cursor (railwayapp#134)

Handle Passed Err (railwayapp#133)

railway run uses project token if found (railwayapp#132)