refactor: Move errors to separate file

Author: vovanbo

src/errors.ts

@@ -0,0 +1,27 @@
+export enum GithubRepositoriesServiceError {
+    RequestFailed = "GitHub GraphQL request is failed",
+    DeserializationFailed = "Deserialization of GraphQL response is failed",
+}
+
+export enum PluginError {
+    ImportFailed = "Import failed",
+    CreateFolderFailed = "Create folder failed",
+    CreateFileFailed = "Create file failed",
+    ProcessingFailed = "Processing failed",
+    FileCanNotBeRemoved = "File can not be removed",
+    FileNotFound = "File not found",
+}
+
+export enum PluginStorageError {
+    ImportFailed = "Import to storage failed",
+    RemoveUnstarredRepositoriesFailed = "Remove unstarred repositories failed",
+    SchemaCreationFailed = "Database schema creation was failed",
+    InitializationFailed = "Storage initialization failed",
+}
+
+export enum SqliteDatabaseError {
+    ModuleInitializationFailed = "Database module initialization failed",
+    DatabaseIsNotInitialized = "Database is not initialized",
+    FileIsNotExists = "Database file is not exists",
+    DatabaseSaveFailed = "Unable to save database file",
+}