style: Apply go fmt to go code (#2046)

~I will add pre-commit hook later if I find a good one~

Found a nice repo, but it is no longer maintained:
https://github.com/dnephin/pre-commit-golang
So, I implemented the check as a local hook.

.pre-commit-config.yaml

@@ -30,3 +30,12 @@ repos:
     hooks:
       - id: prettier
         exclude: ^docs/doxygen-awesome-theme/
+
+  - repo: local
+    hooks:
+      - id: gofmt
+        name: Go Format
+        entry: pre-commit-hooks/run-go-fmt.sh
+        types: [go]
+        language: golang
+        description: "Runs `gofmt`, requires golang"

pre-commit-hooks/run-go-fmt.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+#
+# Capture and print stdout, since gofmt doesn't use proper exit codes
+#
+set -e -o pipefail
+
+if ! command -v gofmt &> /dev/null ; then
+    echo "gofmt not installed or available in the PATH" >&2
+    exit 1
+fi
+
+output="$(gofmt -l -w "$@")"
+echo "$output"
+[[ -z "$output" ]]

tools/requests_gun/internal/request_maker/request_maker.go

@@ -4,12 +4,12 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"github.com/gorilla/websocket"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
 	"time"
-	"github.com/gorilla/websocket"
 )
 
 type RequestMaker interface {