add notes for developement of cli

NOTES_CLI.md

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+# Notes CLI
+
+
+## Features
+  
+- fetch p2pool node stratum data
+- start XMRig instance.
+- stop with descriptive errors if p2pool/xmrig have issue at launch.
+- output status of algo
+- output on demand public stats
+- output on demand account stats
+
+## Launch args
+- XVB token
+- XMR address
+- p2pool address:port
+- optional: hero
+- optional: xmrig custom additional args 
+- optional: quiet algo
+- optional: quiet xmrig
+- optional: path of xmrig
+
+Example:
+
+```
+gupaxx-cli --token xxxxx --address xxxxx --hero --p2pool="127.0.0.1:3333" --xmrig-add-args="--xxx --xxx" -t 8 -q --path-xmrig="/path/to/xmrig-binary"
+```
+
+## Commands
+Possible input at runtime:  
+- all commands of xmrig: transfer the commands to the xmrig instance and return output.
+- pubstats/ps: returns the stats of the public API.
+- accountstats/as: returns the stats of your account.
+- quit: quit the program, shutting down xmrig.
+Example
+
+```
+as ↵
+failures: 0
+donated_last_hour: 0.00kH/s
+donated_last_24_hours: 0.00kH/s
+Round: VIP
+You are not the winner
+```
+
+
+## Technical implementation
+
+The CLI binary must be constructed by enabling the feature `cli`.  
+The feature enabled will adapt the code of the GUI.  
+
+It has also his own main source file.