Rename 'anthropic' to 'anthropic/completion' (#120)

More consistency in the way we name our model providers.

src/modelProviders/anthropic-completion/frontend.ts

@@ -0,0 +1,42 @@
+import { type Completion } from "@anthropic-ai/sdk/resources";
+import { type SupportedModel } from ".";
+import { type FrontendModelProvider } from "../types";
+import { refinementActions } from "./refinementActions";
+
+const frontendModelProvider: FrontendModelProvider<SupportedModel, Completion> = {
+  name: "Replicate Llama2",
+
+  models: {
+    "claude-2.0": {
+      name: "Claude 2.0",
+      contextWindow: 100000,
+      promptTokenPrice: 11.02 / 1000000,
+      completionTokenPrice: 32.68 / 1000000,
+      speed: "medium",
+      provider: "anthropic/completion",
+      learnMoreUrl: "https://www.anthropic.com/product",
+      apiDocsUrl: "https://docs.anthropic.com/claude/reference/complete_post",
+    },
+    "claude-instant-1.1": {
+      name: "Claude Instant 1.1",
+      contextWindow: 100000,
+      promptTokenPrice: 1.63 / 1000000,
+      completionTokenPrice: 5.51 / 1000000,
+      speed: "fast",
+      provider: "anthropic/completion",
+      learnMoreUrl: "https://www.anthropic.com/product",
+      apiDocsUrl: "https://docs.anthropic.com/claude/reference/complete_post",
+    },
+  },
+
+  refinementActions,
+
+  normalizeOutput: (output) => {
+    return {
+      type: "text",
+      value: output.completion,
+    };
+  },
+};
+
+export default frontendModelProvider;