merge: integrate upstream dev (refactored CLI into handleGetCmd/handleSetCmd)

Resolves conflict in src/helpers/CommonCLI.cpp where upstream extracted
the get/set handlers into separate methods. Our region.autotag and
region.autotag.max.hops commands are now placed in the new handleGetCmd
and handleSetCmd methods.

docs/cli_commands.md

@@ -102,7 +102,9 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 - `neighbor.remove <pubkey_prefix>`
 
 **Parameters:** 
-- `pubkey_prefix`: The public key of the node to remove from the neighbors list
+- `pubkey_prefix`: The public key of the node to remove from the neighbors list. This can be a short prefix or the full key. All neighbors matching the provided prefix will be removed.
+
+**Note:** You can remove all neighbors by sending a space character as the prefix. The space indicates an empty prefix, which matches all existing neighbors.
 
 ---
 
@@ -217,6 +219,20 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 
 ---
 
+#### View or change the boosted receive gain mode
+**Usage:**
+- `get radio.rxgain`
+- `set radio.rxgain <state>`
+
+**Parameters:**
+- `state`: `on`|`off`
+
+**Default:** `off`
+
+**Note:** Only available on SX1262 and SX1268 based boards.
+
+---
+
 #### Change the radio parameters for a set duration
 **Usage:** 
 - `tempradio <freq>,<bw>,<sf>,<cr>,<timeout_mins>`
@@ -748,6 +764,16 @@ This document provides an overview of CLI commands that can be sent to MeshCore
 
 ---
 
+#### View or change the default scope region for this node
+**Usage:** 
+- `region default`
+- `region default {name|<null>}`
+
+**Parameters:**
+- `name`: Region name,  or <null> to reset/clear
+
+---
+
 #### Create a new region
 **Usage:** 
 - `region put <name> [parent_name]`