Move @types/multer to dependencies

[dprgarner]

Types from @types/multer are being used in the exported framework/types.d.ts file. This breaks the TypeScript build of any project that uses this library but doesn't have @types/multer installed. Multer isn't a peerDependency of this library, so it shouldn't be a requirement for projects using express-openapi-validator to install it separately. It should be included as a dependency, and not a devDependency.

There could potentially be an issue with @types/express being used in framework/types.d.ts as well, but it's likely that any TypeScript project using this library will already have express types installed separately.

[cdimascio]

Thanks @dprgarner!

[cdimascio]

@all-contributors add @dprgarner for code

[allcontributors]

@cdimascio

I've put up a pull request to add @dprgarner! 🎉

[pscanf]

@cdimascio I saw you ~reverted this PR soon after, were there any problems with moving @types/multer to dependencies?

(I noticed as updating to the latest version of express-openapi-validator once again gives me typescript errors regarding multer).

P.S. - since this is the first issue I open here, I'll take the chance to thank you for this amazing project! Great approach for building REST APIs and great DX of the library!

[cdimascio]

@dprgarner apologies, my mistake. This can go back to dependencies