feat: allow auto/pre-selected extension (#255)

* feat: allow auto/pre-selected extension

* fix: revert typo and changes made for local dev

frontend/src/atoms/settings.ts

@@ -40,6 +40,7 @@ export interface SettingsState {
   cliArgs: string
   formatSelection: boolean
   fileRenaming: boolean
+  autoFileExtension: boolean
   pathOverriding: boolean
   enableCustomArgs: boolean
   listView: boolean
@@ -82,6 +83,11 @@ export const fileRenamingState = atomWithStorage(
   localStorage.getItem('file-renaming') === 'true'
 )
 
+export const autoFileExtensionState = atomWithStorage(
+  'auto-file-extension',
+  localStorage.getItem('auto-file-extension') === 'true'
+)
+
 export const pathOverridingState = atomWithStorage(
   'path-overriding',
   localStorage.getItem('path-overriding') === 'true'
@@ -168,6 +174,7 @@ export const settingsState = atom<SettingsState>((get) => ({
   cliArgs: get(latestCliArgumentsState),
   formatSelection: get(formatSelectionState),
   fileRenaming: get(fileRenamingState),
+  autoFileExtension: get(autoFileExtensionState),
   pathOverriding: get(pathOverridingState),
   enableCustomArgs: get(enableCustomArgsState),
   listView: get(listViewState),