Update vector_graphics to match repo conventions

- Add missing licence headers.
- Remove analysis options fix new warnings.
- Update min SDKs.
- Autoformat.
- Update pubspecs to follow repo standard.
  - Includes removing dependency overrides for inter-package path
    pinning as a default state; this can be added temporarily in PRs
    with repo tooling.
- Allow xml dependency, and relax the pinning requirement to allow an
  explicit, inclusive-endpoint range.
- Skip tests on unsupported platforms.
- Switch vector_graphics_codec from flutter_test to test.
- Add repo metadata.
- Add commemoration to the README.
- Add AUTHORS files.
- Bump versions and slightly relax version constraints to allow the new
  versions.

script/tool/lib/src/pubspec_check_command.dart

@@ -612,7 +612,8 @@ Please move them to dev_dependencies.
       if (constraint is VersionRange &&
           constraint.min != null &&
           constraint.max != null &&
-          constraint.min == constraint.max) {
+          constraint.includeMin &&
+          constraint.includeMax) {
         return true;
       }
     }