Add handlers for 404 and 500 errors

* Add SQLite & database stubbing

* Add client & request testing

* Add StubRedis

* Cleanup

* Add SeedDatabase command

* Add assertEmpty and clean up bool field parsing

* Fix optional issue

* Swift 5.5 compatible

* Add variadic parameters to middleware

* macOS 12 only

* Update response debug description

* Add Plot & partial papyrus test coverage

* Refactor Client for testability

* Finalize Client mocking and Papyrus tests

* Add folders

* Application tests & routing cleanup

* Request & Scheduler tests

* Env & Scheduler tests

* Response tests

* WIP

* SQLValue, SQLRow, some Driver tests

* Update

* Use OrderedCollections

* Wrap SQLite and MySQL row tests

* Column

* SQL to variable

* SQLConvertible conformance

* Cleanup Query

* Refactor Grammar

* Remove OrderedDictionary

* Remove insert and return hack

* Start Query tests and some Equatable conformance

* Full Query coverage

* Many tests

* Lots of coverage

* Command and StaticFileMiddleware tests

* Seeder, Auth & Configurable tests

* Some Server tests and additional Queue tests

* Clean up main & tweak config acess

* CORSMiddleware tests

* Relationship tests

* More Command & additional Database Tests

* Add misc tests

* Convert to humingbird

* Add URL and Multipart content encoding

* Add content tests

* Add files and storage

* Storage tests

* Streaming WIP

* Streaming WIP

* Wrap up Client

* Add streaming and test cases

* Add 413

* Convert to extensions

* Get multipart working

* Cleanup

* Fix commands

* Kill content

* WIP codable

* Add content reading and tests

* Finalize