feat(counit): init basic apis

src/main/kotlin/cc/unitmesh/devti/counit/PatternMatching.kt

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+package cc.unitmesh.devti.counit
+
+class PatternMatching {
+
+}

src/main/kotlin/cc/unitmesh/devti/counit/PreProcessor.kt

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+package cc.unitmesh.devti.counit
+
+import cc.unitmesh.devti.settings.configurable.coUnitSettings
+import com.intellij.openapi.project.Project
+
+class PreProcessor(val project: Project) {
+    fun isCoUnit(input: String): Boolean {
+        return project.coUnitSettings.enableCoUnit && input.startsWith("/counit")
+    }
+}
+

src/main/kotlin/cc/unitmesh/devti/counit/client/CoUnitApi.kt

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+package cc.unitmesh.devti.counit.client
+
+import cc.unitmesh.devti.counit.model.PromptResult
+import cc.unitmesh.devti.counit.model.Tool
+import retrofit2.Call
+import retrofit2.http.GET
+import retrofit2.http.POST
+import retrofit2.http.Query
+
+interface CoUnitApi {
+    @GET("/prompt/explain")
+    fun explainQuery(@Query("q") q: String): Call<PromptResult>
+
+    @POST("/prompt/functions/matching")
+    fun toolPrompter(@Query("q") q: String): Call<PromptResult>
+
+    @GET("/prompt/functions/list")
+    fun functions(): Call<List<Tool>>
+}

src/main/kotlin/cc/unitmesh/devti/counit/model/ExplainQuery.kt

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+package cc.unitmesh.devti.counit.model
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ExplainQuery(
+    val domain: String,
+    val query: String,
+    @SerialName("hypothetical_document")
+    val hypotheticalDocument: String
+)
+
+@Serializable
+data class QAExample(
+    val question: String,
+    val answer: ExplainQuery
+)

src/main/kotlin/cc/unitmesh/devti/counit/model/PromptResult.kt

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+package cc.unitmesh.devti.counit.model
+
+data class PromptResult(
+    val prompt: String
+)

src/main/kotlin/cc/unitmesh/devti/counit/model/Tool.kt

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+package cc.unitmesh.devti.counit.model
+
+data class Tool(
+    val name: String,
+    val description: String,
+    val schema: String,
+    val examples: String
+)