Generate swagger json (#1402)

- Generate swagger.json into public/
- Add swagger-ui auto-installation
- Add footer link to local swagger-ui
- Add /swagger url for using app url.
- Fix Swagger-UI version via git tag

vendor/code.gitea.io/sdk/gitea/miscellaneous.go

@@ -4,15 +4,47 @@
 
 package gitea
 
-// MarkdownOption markdown options
-type MarkdownOption struct {
-	Text    string
-	Mode    string
-	Context string
-	Wiki    bool
+// SearchResults results of search
+// swagger:response SearchResults
+type SearchResults struct {
+	OK   bool          `json:"ok"`
+	Data []*Repository `json:"data"`
 }
 
+// SearchError error of failing search
+// swagger:response SearchError
+type SearchError struct {
+	OK    bool   `json:"ok"`
+	Error string `json:"error"`
+}
+
+// MarkdownOption markdown options
+// swagger:parameters renderMarkdown
+type MarkdownOption struct {
+	// Text markdown to render
+	//
+	// in: body
+	Text string
+	// Mode to render
+	//
+	// in: body
+	Mode string
+	// Context to render
+	//
+	// in: body
+	Context string
+	// Is it a wiki page ?
+	//
+	// in: body
+	Wiki bool
+}
+
+// MarkdownRender is a rendered markdown document
+// swagger:response MarkdownRender
+type MarkdownRender string
+
 // ServerVersion wraps the version of the server
+// swagger:response ServerVersion
 type ServerVersion struct {
 	Version string
 }