feat(snippets): Add files array to snippet creation

This adds the new `files` array for creating snippets that replaces the
now deprecated `filename` and `contents` keys.

This is needed for creating more then one file in snippets.

Issue #1372

project_snippets.go

@@ -94,6 +94,7 @@ type CreateProjectSnippetOptions struct {
 	Description *string          `url:"description,omitempty" json:"description,omitempty"`
 	Content     *string          `url:"content,omitempty" json:"content,omitempty"`
 	Visibility  *VisibilityValue `url:"visibility,omitempty" json:"visibility,omitempty"`
+	Files       []*SnippetFile   `url:"files,omitempty" json:"files,omitempty"`
 }
 
 // CreateSnippet creates a new project snippet. The user must have permission

project_snippets_test.go

@@ -172,7 +172,13 @@ func TestProjectSnippetsService_CreateSnippet(t *testing.T) {
 			  },
 			  "project_id": 1,
 			  "web_url": "http://example.com/example/example/snippets/1",
-			  "raw_url": "http://example.com/example/example/snippets/1/raw"
+			  "raw_url": "http://example.com/example/example/snippets/1/raw",
+			  "files": [
+				{
+					"path": "add.rb",
+					"raw_url": "http://example.com/example/example/-/snippets/1/raw/main/add.rb"
+				}
+	   		  ]
 			}
 		`)
 	})
@@ -198,6 +204,15 @@ func TestProjectSnippetsService_CreateSnippet(t *testing.T) {
 		},
 		WebURL: "http://example.com/example/example/snippets/1",
 		RawURL: "http://example.com/example/example/snippets/1/raw",
+		Files: []struct {
+			Path   string `json:"path"`
+			RawURL string `json:"raw_url"`
+		}{
+			{
+				Path:   "add.rb",
+				RawURL: "http://example.com/example/example/-/snippets/1/raw/main/add.rb",
+			},
+		},
 	}
 
 	s, resp, err := client.ProjectSnippets.CreateSnippet(1, nil, nil, nil)

snippets.go

@@ -51,6 +51,10 @@ type Snippet struct {
 	CreatedAt *time.Time `json:"created_at"`
 	WebURL    string     `json:"web_url"`
 	RawURL    string     `json:"raw_url"`
+	Files     []struct {
+		Path   string `json:"path"`
+		RawURL string `json:"raw_url"`
+	} `json:"files"`
 }
 
 func (s Snippet) String() string {
@@ -101,6 +105,15 @@ func (s *SnippetsService) GetSnippet(snippet int, options ...RequestOptionFunc)
 	return ps, resp, err
 }
 
+// SnippetFile represents the object that is used to create snippets
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ce/api/snippets.html#create-new-snippet
+type SnippetFile struct {
+	FilePath *string `url:"file_path,omitempty" json:"file_path,omitempty"`
+	Content  *string `url:"content,omitempty" json:"content,omitempty"`
+}
+
 // CreateSnippetOptions represents the available CreateSnippet() options.
 //
 // GitLab API docs:
@@ -111,6 +124,7 @@ type CreateSnippetOptions struct {
 	Description *string          `url:"description,omitempty" json:"description,omitempty"`
 	Content     *string          `url:"content,omitempty" json:"content,omitempty"`
 	Visibility  *VisibilityValue `url:"visibility,omitempty" json:"visibility,omitempty"`
+	Files       []*SnippetFile   `url:"files,omitempty" json:"files,omitempty"`
 }
 
 // CreateSnippet creates a new snippet. The user must have permission