Updates to @actions/artifact package (#367)

* GZip implementation

* Optimizations and cleanup

* Update tests

* More test updates

* Update packages/artifact/src/internal-utils.ts

Co-Authored-By: Josh Gross <joshmgross@github.com>

* Clarification around Upload Paths

* Refactor to make http clients classes

* GZip fixes

* Documentation around compression

* More detailed status information during large uploads

* Pretty format

* Percentage updates without rounding

* Fix edge cases with formatting numbers

* Update packages/artifact/src/internal-utils.ts

Co-Authored-By: Josh Gross <joshmgross@github.com>

* Cleanup

* Small reorg with status reporter

* PR Feedback

* Cleanup + Simplification

* Test Cleanup

* Mock updates

* More cleanup

* Format fixes

* Overhaul to the http-manager

* Fix tests

* Promisify stats

* Documentation around implementation

* Improvements to documentation

* PR Feedback

* Remove Downloading multiple artifacts concurrently

Co-authored-by: Josh Gross <joshmgross@github.com>

packages/artifact/src/internal/contracts.ts

@@ -0,0 +1,63 @@
+export interface ArtifactResponse {
+  containerId: string
+  size: number
+  signedContent: string
+  fileContainerResourceUrl: string
+  type: string
+  name: string
+  url: string
+}
+
+export interface CreateArtifactParameters {
+  Type: string
+  Name: string
+}
+
+export interface PatchArtifactSize {
+  Size: number
+}
+
+export interface PatchArtifactSizeSuccessResponse {
+  containerId: number
+  size: number
+  signedContent: string
+  type: string
+  name: string
+  url: string
+  uploadUrl: string
+}
+
+export interface UploadResults {
+  uploadSize: number
+  totalSize: number
+  failedItems: string[]
+}
+
+export interface ListArtifactsResponse {
+  count: number
+  value: ArtifactResponse[]
+}
+
+export interface QueryArtifactResponse {
+  count: number
+  value: ContainerEntry[]
+}
+
+export interface ContainerEntry {
+  containerId: number
+  scopeIdentifier: string
+  path: string
+  itemType: string
+  status: string
+  fileLength?: number
+  fileEncoding?: number
+  fileType?: number
+  dateCreated: string
+  dateLastModified: string
+  createdBy: string
+  lastModifiedBy: string
+  itemLocation: string
+  contentLocation: string
+  fileId?: number
+  contentId: string
+}