feat: prompt templates

[Tomas2D]

Extend the current PromptTemplate class to match TS capabilities and mainly the interface.

TS version has the following features:

• built on top of the Mustache templating system
• supports for passing custom validation schema (zod, in Python it should be Pydantic)
• add custom rendering/utility functions

TS implementation: https://github.com/i-am-bee/bee-agent-framework/blob/main/src/template.ts
TS test file: https://github.com/i-am-bee/bee-agent-framework/blob/main/src/template.test.ts

Checklist

• unify interface
• call the module template.py and PromptTemplate class

classDiagram
class PromptTemplate~T~ {
    #config: Required<PromptTemplateInput<T>>
    +validateInput(input: unknown): void
    +fork(customizer: Customizer<T, SchemaObject>): PromptTemplate<T>
    +fork(customizer: Customizer<T, R>): PromptTemplate<R>
    +fork(customizer: Inline): PromptTemplate<T | R>
    +render(input: PromptTemplateRenderInput<T, z.input<T>>): string
    +loadSnapshot(data: Inline): void
    +createSnapshot(): Inline
    +functions$: Inline
}

Loading

[michael-desmond]

This is done except for the ability to fork

[Tomas2D]

Forking is needed for customization and for Agent Workflow that @xjacka is working on (PR: i-am-bee/bee-py#142)