feat(commit): add commit message generation with template rendering

This commit adds the functionality to generate commit messages using a template rendering approach. It introduces a new dependency on `cc.unitmesh.devti.template.TemplateRender` and modifies the `generateCommitMessage` method in `CommitMessageSuggestionAction.kt`. The template used for rendering is `gen-commit-msg.vm` located in `src/main/resources/genius/practises`. The generated commit message includes a history example and the diff content.

Author: phodal

src/main/kotlin/cc/unitmesh/devti/actions/vcs/CommitMessageSuggestionAction.kt

@@ -6,6 +6,7 @@ import cc.unitmesh.devti.gui.chat.ChatActionType
 import cc.unitmesh.devti.llms.LlmFactory
 import cc.unitmesh.devti.vcs.VcsPrompting
 import cc.unitmesh.devti.statusbar.AutoDevStatus
+import cc.unitmesh.devti.template.TemplateRender
 import cc.unitmesh.devti.vcs.VcsUtil
 import com.intellij.openapi.actionSystem.ActionUpdateThread
 import com.intellij.openapi.actionSystem.AnActionEvent
@@ -129,27 +130,23 @@ class CommitMessageSuggestionAction : ChatBaseAction() {
     }
 
     private fun generateCommitMessage(diff: String, project: Project): String {
-        return """Write a cohesive yet descriptive commit message for a given diff. 
-Make sure to include both information What was changed and Why.
-Start with a short sentence in imperative form, no more than 50 characters long.
-Then leave an empty line and continue with a more detailed explanation, if necessary.
-Explanation should have less than 200 characters.
-
-Examples:
-- fix(authentication): add password regex pattern
-- feat(storage): add new test cases
-- test(java): fix test case for user controller
-History Examples:
-${findExampleCommitMessages(project) ?: "No example found."}
-
-Diff:
-
-```diff
-$diff
-```
-
-"""
+        val templateRender = TemplateRender("genius/practises")
+        val template = templateRender.getTemplate("gen-commit-msg.vm")
+
+        val historyExample = findExampleCommitMessages(project) ?: ""
+        templateRender.context = CommitMsgGenContext(
+            historyExample = historyExample,
+            diffContent = diff,
+        )
+        val prompter = templateRender.renderTemplate(template)
+
+        logger.info("Prompt: $prompter")
+        return prompter
     }
-
 }
 
+
+data class CommitMsgGenContext(
+    var historyExample: String = "",
+    var diffContent: String = "",
+)

src/main/resources/genius/practises/gen-commit-msg.vm

@@ -10,8 +10,12 @@ examples:
 - test(java): fix test case for user controller
 
 Diff:
+#if( $context.historyExamples.length() > 0 )
+History Examples:
+$context.historyExamples
+#end
 
 ```diff
-${context.diff}
+${context.diffContent}
 ```