mod+tools+Makefile:separate tools different module

Separated the tools to different go module to avoid having tools
dependencies on the main module.

go.mod

@@ -17,11 +17,9 @@ require (
 	github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f
 	github.com/davecgh/go-spew v1.1.1
 	github.com/dvyukov/go-fuzz v0.0.0-20210602112143-b1f3d6f4ef4e
-	github.com/elazarl/go-bindata-assetfs v1.0.1 // indirect
 	github.com/go-errors/errors v1.0.1
 	github.com/go-openapi/strfmt v0.19.5 // indirect
 	github.com/golang/protobuf v1.5.2
-	github.com/golangci/golangci-lint v1.18.0
 	github.com/gorilla/websocket v1.4.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
@@ -40,6 +38,7 @@ require (
 	github.com/juju/utils v0.0.0-20180820210520-bf9cc5bdd62d // indirect
 	github.com/juju/version v0.0.0-20180108022336-b64dbd566305 // indirect
 	github.com/kkdai/bstream v1.0.0
+	github.com/kr/pretty v0.2.0 // indirect
 	github.com/lightninglabs/neutrino v0.13.0
 	github.com/lightninglabs/protobuf-hex-display v1.4.3-hex-display
 	github.com/lightningnetwork/lightning-onion v1.0.2-0.20210520211913-522b799e65b1
@@ -52,10 +51,8 @@ require (
 	github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796
 	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/miekg/dns v1.1.43
-	github.com/ory/go-acc v0.2.6
+	github.com/mitchellh/mapstructure v1.3.2 // indirect
 	github.com/prometheus/client_golang v1.11.0
-	github.com/rinchsan/gosimports v0.1.5
-	github.com/stephens2424/writerset v1.0.2 // indirect
 	github.com/stretchr/testify v1.7.0
 	github.com/tv42/zbase32 v0.0.0-20160707012821-501572607d02
 	github.com/urfave/cli v1.22.4
@@ -64,8 +61,10 @@ require (
 	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
 	golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
+	golang.org/x/sys v0.0.0-20211210111614-af8b64212486 // indirect
 	golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1
 	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
+	golang.org/x/tools v0.1.8 // indirect
 	google.golang.org/grpc v1.38.0
 	google.golang.org/protobuf v1.26.0
 	gopkg.in/errgo.v1 v1.0.1 // indirect