Add `workflow_dispatch` to CI #402

Job	Run time
mono_repo self validate	14s
analysis; Dart dev; PKGS: command_line, enhanced_enums, extension_methods, ffi/hello_world, ffi/p...	0s
analysis; Dart stable; PKGS: command_line, enhanced_enums, extension_methods, ffi/hello_world, ff...	0s
analysis; Dart dev; PKGS: command_line, enhanced_enums, extension_methods, ffi/hello_world, ffi/p...	0s
analysis; Dart stable; PKGS: command_line, enhanced_enums, extension_methods, ffi/hello_world, ff...	0s
unit_test; Dart dev; PKG: enhanced_enums; `dart test`	0s
unit_test; Dart dev; PKG: extension_methods; `dart test`	0s
unit_test; Dart dev; PKG: command_line; `dart test`	0s
unit_test; Dart dev; PKG: ffi/hello_world; `dart test`	0s
unit_test; Dart dev; PKG: ffi/primitives; `dart test`	0s
unit_test; Dart dev; PKG: ffi/structs; `dart test`	0s
unit_test; Dart dev; PKG: server/simple; `dart test`	0s
unit_test; Dart dev; PKG: package_constraint_solver; `dart pub global run coverage:test_with_cove...	0s
unit_test; Dart stable; PKG: command_line; `dart test`	0s
unit_test; Dart stable; PKG: enhanced_enums; `dart test`	0s
unit_test; Dart stable; PKG: extension_methods; `dart test`	0s
unit_test; Dart stable; PKG: ffi/hello_world; `dart test`	0s
unit_test; Dart stable; PKG: ffi/primitives; `dart test`	0s
unit_test; Dart stable; PKG: ffi/structs; `dart test`	0s
unit_test; Dart stable; PKG: server/simple; `dart test`	0s
Mark Coveralls job finished	0s
	14s

Provide feedback