add dart template

TEMPLATES/analysis_options.yaml

@@ -0,0 +1,57 @@
+---
+##########################
+##########################
+## Dart Linter rules    ##
+##########################
+##########################
+
+# Pedantic Rules
+# https://github.com/dart-lang/pedantic
+
+linter:
+  rules:
+    - always_declare_return_types
+    - always_require_non_null_named_parameters
+    - annotate_overrides
+    - avoid_empty_else
+    - avoid_init_to_null
+    - avoid_null_checks_in_equality_operators
+    - avoid_relative_lib_imports
+    - avoid_return_types_on_setters
+    - avoid_shadowing_type_parameters
+    - avoid_types_as_parameter_names
+    - camel_case_extensions
+    - curly_braces_in_flow_control_structures
+    - empty_catches
+    - empty_constructor_bodies
+    - library_names
+    - library_prefixes
+    - no_duplicate_case_values
+    - null_closures
+    - omit_local_variable_types
+    - prefer_adjacent_string_concatenation
+    - prefer_collection_literals
+    - prefer_conditional_assignment
+    - prefer_contains
+    - prefer_equal_for_default_values
+    - prefer_final_fields
+    - prefer_for_elements_to_map_fromIterable
+    - prefer_generic_function_type_aliases
+    - prefer_if_null_operators
+    - prefer_is_empty
+    - prefer_is_not_empty
+    - prefer_iterable_whereType
+    - prefer_single_quotes
+    - prefer_spread_collections
+    - recursive_getters
+    - slash_for_doc_comments
+    - type_init_formals
+    - unawaited_futures
+    - unnecessary_const
+    - unnecessary_new
+    - unnecessary_null_in_if_null_operators
+    - unnecessary_this
+    - unrelated_type_equality_checks
+    - use_function_type_syntax_for_parameters
+    - use_rethrow_when_possible
+    - valid_regexps