Add alternate terminal support for Linux

**Alternate Terminal Support for Linux**

The `run` script with `cos_117.cfg` spawns xterms for consoles, but users may prefer other terminals such as konsole, gnome-terminal or even cool-retro-term.

To resolve, this commit adds alternate terminal support via:

+ gen_term_run_cfg - Generates run script and config combo for any alternate terminal.

Benefits:

- Consoles will launch in the user's desired terminal when the generated script is executed.

Usage:

```
gen_term_run_cfg <terminal-name>
```

Full Usage:
```
Generate run script and configuration for cray_sim
to launch consoles in alternate terminals instead of
xterm.

Usage: ./gen_term_run_cfg <terminal-name>

  Example    - ./gen_term_run_cfg cool-retro-term

```

Tests:

- The script was checked in shellcheck with no issues detected.
- Tested on Ubuntu 22.04.3 LTS (aarch64)
- Tested on Arch Linux (x86_64)

gen_term_run_cfg

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+usage() {
+cat << EOF
+
+Generate run script and configuration for cray_sim
+to launch consoles in alternate terminals instead of
+xterm.
+
+Usage: $0 <terminal-name>
+
+  Example    - $0 cool-retro-term
+
+EOF
+}
+
+# Sanity checks
+if [ "$#" -ne 1 ]; then usage; exit 1; fi
+if [[ ! -f run ]]; then echo "Error: No run file."; exit 1; fi
+if [[ ! -f cos_117.cfg ]]; then echo "Error: No cos_117.cfg file."; exit 1; fi
+
+terminal_name="$1"
+
+# Uniform naming: - to _
+term_suffix="${terminal_name//-/_}"
+cp run "run_${term_suffix}"
+cp cos_117.cfg "cos_117_${term_suffix}.cfg"
+
+# Replace cos_117.cfg and xterm in targets
+sed -i "s/xterm/${terminal_name}/g" "cos_117_${term_suffix}.cfg"
+sed -i "s/cos_117.cfg/cos_117_${term_suffix}.cfg/" "run_${term_suffix}"
+chmod +x "run_${term_suffix}"
+
+cat << EOF
+
+Target Terminal           :  ${terminal_name}
+Generated run script      :  run_${term_suffix}
+Generated configuration   :  cos_117_${term_suffix}.cfg
+
+Genaration Successful!"
+
+EOF