Refactor: reorganize package structure and fix unused imports

Author: z8dn

src/main/kotlin/com/z8dn/plugins/a2pt/nodes/GradleModuleWithProjectFiles.kt

@@ -1,7 +1,5 @@
 package com.z8dn.plugins.a2pt.nodes
 
-import com.z8dn.plugins.a2pt.utils.AndroidViewNodeUtils
-
 import com.android.tools.idea.navigator.nodes.AndroidViewNodeProvider
 import com.android.tools.idea.navigator.nodes.other.NonAndroidModuleNode
 import com.intellij.ide.projectView.ViewSettings

src/main/kotlin/com/z8dn/plugins/a2pt/nodes/ProjectFileNode.kt

@@ -1,7 +1,5 @@
 package com.z8dn.plugins.a2pt.nodes
 
-import com.z8dn.plugins.a2pt.utils.ProjectFileDisplayUtils
-
 import com.intellij.ide.projectView.PresentationData
 import com.intellij.ide.projectView.ViewSettings
 import com.intellij.ide.projectView.impl.nodes.PsiFileNode

src/main/kotlin/com/z8dn/plugins/a2pt/utils/AndroidViewNodeUtils.kt

@@ -1,6 +1,5 @@
 package com.z8dn.plugins.a2pt.utils
 
-import com.z8dn.plugins.a2pt.nodes.ProjectFileNode
 import com.z8dn.plugins.a2pt.settings.AndroidViewSettings
 
 import com.intellij.openapi.module.Module