#8 implement interface Source and methods for gitea without Update (#9)

Прикинул метод Open и Delete, Update пока не до делал.

Co-authored-by: Gorbunov Kirill Andreevich <kgorbunov@mtsbank.ru>
Reviewed-on: #9
Co-authored-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>
Co-committed-by: Кирилл Горбунов <kirya_gorbunov_2015@mail.ru>

Makefile

@@ -2,6 +2,14 @@
 build:
 	CGO_ENABLED=0 go build -o bin/app -mod=readonly git.unistack.org/unistack-org/pkgdash/cmd/pkgdash
 
+.PHONY: buildcli
+buildcli:
+	CGO_ENABLED=0 go build -o bin/app -mod=readonly git.unistack.org/unistack-org/pkgdash/cmd/pkgdashcli
+
+.PHONY: cli
+cli:
+	go install git.unistack.org/unistack-org/pkgdash/cmd/pkgdashcli
+
 .PHONY: test
 test:
 	go test -v ./... -race -cover