add cosign example to README (solo-io#74)

add support for running without a tty (solo-io#65)

* abstract printing from pterm for non-tty mode

* run without TUI

* formatting

* update CMD for package to not render TUI

* being extraction of tui and loader

* Revert "run without TUI"

This reverts commit fdbcc55.

* remove tui managing loader lifecycle

* cleanup

* being abstracting out TUI as a watcher

* correctly handle sigint and lifecycle

* use waitgroups

* waitgroups in tui, tui uses loader

* waitgroup for tview run, fixup signals in run cmd

* cleanup run cmd

* cleanup tui watch()

* more cleanup

* Revert "cleanup tui watch()"

This reverts commit 391f359.

* comments for tui watch()

* remove printer abstraction

* code formatting

* implement no-tty mode

* move noopWatcher to constructor

* remove comment

fixup CI for bee image release (solo-io#63)

* fixup CI for bee image release

* review comments

* use latest go 1.17

add step to download a given version (solo-io#62)

fix broken cli flags (solo-io#33)

fix banner, reorg right menu (solo-io#30)

add a few clarifications to contributing page (solo-io#28)

switch tui text (solo-io#14)

fix util (solo-io#13)

fix buidler name in build command