refactor(snippet): rename AutoDevInsertFileAction to AutoDevInsertCodeAction

Renamed the file `AutoDevInsertFileAction.kt` to `AutoDevInsertCodeAction.kt` because the name didn't accurately reflect its purpose.

Author: phodal

src/233/main/resources/META-INF/autodev-core.xml

@@ -293,7 +293,7 @@
                     class="cc.unitmesh.devti.gui.snippet.AutoDevCopyToClipboardAction"/>
             <action id="AutoDev.ToolWindow.Snippet.InsertFile"
                     icon="cc.unitmesh.devti.AutoDevIcons.InsertCode"
-                    class="cc.unitmesh.devti.gui.snippet.AutoDevInsertFileAction"/>
+                    class="cc.unitmesh.devti.gui.snippet.AutoDevInsertCodeAction"/>
         </group>
 
         <group id="AutoDev.ToolWindow.Chat.TitleActions">

src/main/kotlin/cc/unitmesh/devti/gui/snippet/AutoDevInsertToCodeAction.kt renamed to src/main/kotlin/cc/unitmesh/devti/gui/snippet/AutoDevInsertCodeAction.kt

@@ -7,7 +7,7 @@ import com.intellij.openapi.command.WriteCommandAction
 import com.intellij.openapi.fileEditor.FileEditorManager
 import com.intellij.openapi.project.DumbAwareAction
 
-class AutoDevInsertFileAction : DumbAwareAction() {
+class AutoDevInsertCodeAction : DumbAwareAction() {
     override fun actionPerformed(e: AnActionEvent) {
         val project = e.project ?: return
         val editor = e.getData(PlatformDataKeys.EDITOR) ?: return