docs: add VISION document draft

VISION.md

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+# 🔭 Vision [WIP]
+
+Create a first class Terminal User Interface(TUI) for the Algorand ecosystem.
+This project renews the work of [node-ui](https://github.com/algorand/node-ui) and
+is largely inspired by it.
+
+# Motivation
+
+**Staking Rewards™️** require additional configuration and monitoring which this **Hacktui** seeks to simplify. 
+
+## Primary Goals
+
+- facilitate keyregs
+- thin algod REST client
+- display status and health
+
+## Secondary Goals
+
+- install/configure algod
+- start/stop node
+- fast catchup start / stop