GP-4441: new option for target remote

GP-4441: post-review edits
GP-4441: first pass
GP-4441: working remote gdb/lldbGP-4441: updated via 4437GP-4441: embedded updatesGP-4441: set arch conditionally

Ghidra/Debug/Debugger-agent-gdb/data/debugger-launchers/remote-gdb.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 ## ###
 #  IP: GHIDRA
 # 
@@ -30,9 +30,11 @@
 #@menu-group remote
 #@icon icon.debugger
 #@help TraceRmiLauncherServicePlugin#gdb
-#@arg :str "Image" "The target binary executable image on the remote system"
+#@enum TargetType:str remote extended-remote
+#@env OPT_TARGET_TYPE:TargetType="remote" "Target" "The type of remote target"
 #@env OPT_HOST:str="localhost" "Host" "The hostname of the target"
 #@env OPT_PORT:str="9999" "Port" "The host's listening port"
+#@env OPT_ARCH:str="" "Architecture (optional)" "Target architecture override"
 #@env OPT_GDB_PATH:str="gdb" "Path to gdb" "The path to gdb on the local system. Omit the full path to resolve using the system PATH."
 
 if [ -d ${GHIDRA_HOME}/ghidra/.git ]
@@ -48,13 +50,21 @@ else
   export PYTHONPATH=$GHIDRA_HOME/Ghidra/Debug/Debugger-rmi-trace/pypkg/src:$PYTHONPATH
 fi
 
+if [ -z "$OPT_ARCH" ]
+then
+  archcmd=
+else
+  archcmd=-ex "set arch $OPT_ARCH" 
+fi
+
 "$OPT_GDB_PATH" \
   -q \
   -ex "set pagination off" \
   -ex "set confirm off" \
   -ex "show version" \
   -ex "python import ghidragdb" \
-  -ex "target remote $OPT_HOST:$OPT_PORT" \
+  $archcmd \
+  -ex "target $OPT_TARGET_TYPE $OPT_HOST:$OPT_PORT" \
   -ex "ghidra trace connect \"$GHIDRA_TRACE_RMI_ADDR\"" \
   -ex "ghidra trace start" \
   -ex "ghidra trace sync-enable" \