TextSynth support (#1919)

* working textsynth (no chat)

* nit

* nit

core/src/lib.rs

@@ -30,6 +30,7 @@ pub mod providers {
         pub mod tiktoken;
     }
     pub mod anthropic;
+    pub mod textsynth;
 }
 pub mod http {
     pub mod request;

core/src/providers/provider.rs

@@ -13,6 +13,8 @@ use serde::{Deserialize, Serialize};
 use std::str::FromStr;
 use std::time::Duration;
 
+use super::textsynth::TextSynthProvider;
+
 #[derive(Debug, Clone, Copy, Serialize, PartialEq, Deserialize)]
 #[serde(rename_all = "lowercase")]
 pub enum ProviderID {
@@ -22,6 +24,7 @@ pub enum ProviderID {
     #[serde(rename = "azure_openai")]
     AzureOpenAI,
     Anthropic,
+    TextSynth,
 }
 
 impl ToString for ProviderID {
@@ -32,6 +35,7 @@ impl ToString for ProviderID {
             ProviderID::AI21 => String::from("ai21"),
             ProviderID::AzureOpenAI => String::from("azure_openai"),
             ProviderID::Anthropic => String::from("anthropic"),
+            ProviderID::TextSynth => String::from("textsynth"),
         }
     }
 }
@@ -45,6 +49,7 @@ impl FromStr for ProviderID {
             "ai21" => Ok(ProviderID::AI21),
             "azure_openai" => Ok(ProviderID::AzureOpenAI),
             "anthropic" => Ok(ProviderID::Anthropic),
+            "textsynth" => Ok(ProviderID::TextSynth),
             _ => Err(ParseError::with_message(
                 "Unknown provider ID (possible values: openai, cohere, ai21, azure_openai)",
             ))?,
@@ -139,5 +144,6 @@ pub fn provider(t: ProviderID) -> Box<dyn Provider + Sync + Send> {
         ProviderID::AI21 => Box::new(AI21Provider::new()),
         ProviderID::AzureOpenAI => Box::new(AzureOpenAIProvider::new()),
         ProviderID::Anthropic => Box::new(AnthropicProvider::new()),
+        ProviderID::TextSynth => Box::new(TextSynthProvider::new()),
     }
 }