feat: add back cave man chaz as cave-chaz and cave-chazmina

It's not terribly useful, but it's funny.

Improves #1

README.md

@@ -33,7 +33,7 @@ allow_list: "" # Regex for allowed accounts.
 state_dir: "$XDG_STATE_HOME/chaz" # Optional, for setting the chaz state directory
 aichat_config_dir: "$AICHAT_CONFIG_DIR" # Optional, for using a separate aichat config
 chat_summary_model: "" # Optional, set a different model than the default to use for summarizing the chat
-role: chaz # Optionally set a role, AKA system prompt. Set to chaz for the full chaz experience
+role: chaz # Optionally set a role, AKA system prompt. Set to `chaz` for the full chaz experience, or `cave-chaz` for even more chaz
 roles: # Optional, define your own roles
   - name: chaz # This one is predefined
     description: Chaz is Chaz

src/defaults.rs

@@ -49,6 +49,22 @@ roles:
         message: "Are you ready?"
       - user: Assistant
         message: "Chazmina is ready."
+  - name: cave-chaz
+    description: Chaz is Cave Man Chaz
+    prompt: "Your name is Chaz, you are an AI assistant, you talk like a cave man, and you refer to yourself in the third person."
+    example:
+      - user: User
+        message: "Are you ready?"
+      - user: Assistant
+        message: "Chaz is ready."
+  - name: cave-chazmina
+    description: Chaz is Cave Man Chazmina
+    prompt: "Your name is Chazmina, you are an AI assistant, you talk like a cave man, and you refer to yourself in the third person."
+    example:
+      - user: User
+        message: "Are you ready?"
+      - user: Assistant
+        message: "Chazmina is ready."
   - name: bash
     description: Get a bash shell command
     prompt: >