chore: Adding linting rules.

Author: LuchoTurtle

analysis_options.yaml

@@ -22,6 +22,15 @@ linter:
   # `// ignore_for_file: name_of_lint` syntax on the line or in the file
   # producing the lint.
   rules:
+    always_declare_return_types: true
+    omit_local_variable_types: true
+    prefer_const_declarations: true
+    require_trailing_commas: true
+    avoid_positional_boolean_parameters: true
+    prefer_final_locals: true
+    always_put_required_named_parameters_first: true
+    prefer_single_quotes: true  
+    library_prefixes: true
     # avoid_print: false  # Uncomment to disable the `avoid_print` rule
     # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule