chore: move source code to root folder

Makefile

@@ -1,23 +1,23 @@
 go/dependencies:
-	cd src/ && go mod download
+	go mod download
 
 # Make sure no unnecessary dependencies are present
 go/checkDependencies:
-	cd src/ && go mod tidy -v
+	go mod tidy -v
 	git diff-index --quiet HEAD
 
 # Standard go test
 go/test:
-	cd src/ && go test ./... -v -race
+	go test ./... -v -race
 
 go/fmt:
-	cd src/ && go fmt ./...
+	go fmt ./...
 
 go/checkFmt:
 	test -z $(shell gofmt -l .)
 
 build/docker:
-	cd src/ && go build -o fail2ban_exporter \
+	go build -o fail2ban_exporter \
      -ldflags '-X main.version=$(shell git describe --tags) -X main.commit=${shell git rev-parse HEAD} -X "main.date=${shell date --rfc-3339=seconds}" -X main.builtBy=docker' exporter.go
 
 docker/build/latest: