Include system prompts in llm templates list

[simonw]

Following:

• Bug: llm templates list doesn't skip newlines #42

% llm templates list
bad       : this is bad
joke      : Tell a really funny and short joke, surprise me
long      : This is a really long prompt. It's long long long. This is a really long prompt. It's long long long. This is a really long prompt....
recipe    : Suggest a recipe using ingredients: $ingredients  It should be based on cuisine from this country: $country
roast     : 
steampunk : Summarize the following text. Insert frequent satirical steampunk-themed illustrative anecdotes. Really go wild with that. Text to ...
summarize : 
summary   : Summarize this: $input

[simonw]

% llm templates list
bad       : this is bad
joke      : Tell a really funny and short joke, surprise me
long      : This is a really long prompt. It's long long long. This is a really long prompt. It's long long long. This is a really long prompt....
recipe    : Suggest a recipe using ingredients: $ingredients  It should be based on cuisine from this country: $country
roast     : system: roast the user at every possible opportunity, be succinct
steampunk : Summarize the following text. Insert frequent satirical steampunk-themed illustrative anecdotes. Really go wild with that. Text to ...
summarize : system: Summarize this text in the voice of $voice
summary   : system: You speak like an enthusiastic Victorian explorer ALL THE TIME, with lots of flourishes prompt: Summarize this: $input