refactor: make Cosmovisor use cobra

cosmovisor/CHANGELOG.md

@@ -37,7 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ## [Unreleased]
 <!-- NOTE: when creating a new release, update cosmovisor/cmd/cosmovisor/cmd/version.go:Version -->
 
-* [\#11731](https://github.com/cosmos/cosmos-sdk/pull/11731) `cosmovisor version --json` returns the cosmovisor version and the result of `simd --output json --long` in one JSON object.
+### Features
+
+* [\#11823](https://github.com/cosmos/cosmos-sdk/pull/11823) Refactor `cosmovisor` CLI to use `cobra`.
+* [\#11731](https://github.com/cosmos/cosmos-sdk/pull/11731) `cosmovisor version -o json` returns the cosmovisor version and the result of `simd --output json --long` in one JSON object.
 
 ## v1.1.0 2022-10-02
 

cosmovisor/cmd/cosmovisor/help.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/cosmos/cosmos-sdk/cosmovisor"
+)
+
+// GetHelpText creates the help text multi-line string.
+func GetHelpText() string {
+	return fmt.Sprintf(`Cosmosvisor - A process manager for Cosmos SDK application binaries.
+
+Cosmovisor is a wrapper for a Cosmos SDK based App (set using the required %s env variable).
+It starts the App by passing all provided arguments and monitors the %s/data/upgrade-info.json
+file to perform an update. The upgrade-info.json file is created by the App x/upgrade module
+when the blockchain height reaches an approved upgrade proposal. The file includes data from
+the proposal. Cosmovisor interprets that data to perform an update: switch a current binary
+and restart the App.
+
+Configuration of Cosmovisor is done through environment variables, which are
+documented in: https://github.com/cosmos/cosmos-sdk/tree/main/cosmovisor/README.md`,
+		cosmovisor.EnvName, cosmovisor.EnvHome,
+	)
+}