feat: add Linux support

example/default_example/pubspec.yaml

@@ -38,10 +38,15 @@ flutter_launcher_icons:
   macos:
     generate: true
     image_path: "assets/images/icon-1024x1024.png"
+  linux:
+    generate: true
+    image_path: "assets/images/icon-logo.png"
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
 
 flutter:
   uses-material-design: true
+  assets:
+    - assets/images/icon-logo.png

lib/abs/icon_generator.dart

@@ -1,6 +1,7 @@
 import 'dart:io';
 
 import 'package:flutter_launcher_icons/config/config.dart';
+import 'package:flutter_launcher_icons/config/linux_config.dart';
 import 'package:flutter_launcher_icons/config/macos_config.dart';
 import 'package:flutter_launcher_icons/config/web_config.dart';
 import 'package:flutter_launcher_icons/config/windows_config.dart';
@@ -64,6 +65,9 @@ class IconGeneratorContext {
 
   /// Shortcut for `config.macOSConfig`
   MacOSConfig? get macOSConfig => config.macOSConfig;
+
+  /// Shortcut for `config.linuxConfig`
+  LinuxConfig? get linuxConfig => config.linuxConfig;
 }
 
 /// Generates Icon for given platforms

lib/config/config.dart

@@ -1,6 +1,7 @@
 import 'dart:io';
 
 import 'package:checked_yaml/checked_yaml.dart' as yaml;
+import 'package:flutter_launcher_icons/config/linux_config.dart';
 import 'package:flutter_launcher_icons/config/macos_config.dart';
 import 'package:flutter_launcher_icons/config/web_config.dart';
 import 'package:flutter_launcher_icons/config/windows_config.dart';
@@ -38,6 +39,7 @@ class Config {
     this.webConfig,
     this.windowsConfig,
     this.macOSConfig,
+    this.linuxConfig,
   });
 
   /// Creates [Config] for given [flavor] and [prefixPath]
@@ -173,6 +175,10 @@ class Config {
   @JsonKey(name: 'macos')
   final MacOSConfig? macOSConfig;
 
+  /// Linux platform config
+  @JsonKey(name: 'linux')
+  final LinuxConfig? linuxConfig;
+
   /// Creates [Config] icons from [json]
   factory Config.fromJson(Map json) => _$ConfigFromJson(json);
 
@@ -193,7 +199,8 @@ class Config {
         android != false ||
         webConfig != null ||
         windowsConfig != null ||
-        macOSConfig != null;
+        macOSConfig != null ||
+        linuxConfig != null;
   }
 
   /// Whether or not configuration for generating Web icons exist
@@ -205,6 +212,9 @@ class Config {
   /// Whether or not configuration for generating MacOS icons exists
   bool get hasMacOSConfig => macOSConfig != null;
 
+  /// Whether or not configuration for generating Linux icons exists
+  bool get hasLinuxConfig => linuxConfig != null;
+
   /// Check to see if specified Android config is a string or bool
   /// String - Generate new launcher icon with the string specified
   /// bool - override the default flutter project icon

lib/config/linux_config.dart

@@ -0,0 +1,32 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'linux_config.g.dart';
+
+/// The flutter_launcher_icons configuration set for Linux
+@JsonSerializable(
+  anyMap: true,
+  checked: true,
+)
+class LinuxConfig {
+  /// Specifies whether to generate icons for Linux
+  final bool generate;
+
+  /// Image path for Linux
+  @JsonKey(name: 'image_path')
+  final String? imagePath;
+
+  /// Creates a instance of [LinuxConfig]
+  const LinuxConfig({
+    this.generate = false,
+    this.imagePath,
+  });
+
+  /// Creates [LinuxConfig] from [json]
+  factory LinuxConfig.fromJson(Map json) => _$LinuxConfigFromJson(json);
+
+  /// Creates [Map] from [LinuxConfig]
+  Map toJson() => _$LinuxConfigToJson(this);
+
+  @override
+  String toString() => 'LinuxConfig: ${toJson()}';
+}

lib/constants.dart

@@ -84,6 +84,14 @@ final macOSIconsDirPath =
 /// Relative path to macos contents.json
 final macOSContentsFilePath = path.join(macOSIconsDirPath, 'Contents.json');
 
+// Linux
+
+/// Relative path to linux directory
+String linuxDirPath = path.join('linux');
+
+/// Relative path to linux my_application.cc file
+String linuxMyApplicationFile = path.join(linuxDirPath, 'runner', 'my_application.cc');
+
 const String errorMissingImagePath =
     'Missing "image_path" or "image_path_android" + "image_path_ios" within configuration';
 const String errorMissingPlatform =