chore: Fix golangci-lint configuration and patch errors (#34)

* chore: Fix golangci-lint configuration and patch errors

Due to misconfiguration of a linting rules directory, our linter has not been
working properly. This change fixes the configuration issue, and all remaining
linting errors.

* Fix race in peer logging

* Fix race and return

* Lock on bufferred amount low

* Fix mutex lock

cmd/coder/main.go

@@ -3,5 +3,5 @@ package main
 import "fmt"
 
 func main() {
-	fmt.Println("Hello World!")
+	_, _ = fmt.Println("Hello World!")
 }