chore: enable extra-rules from gofumpt (#7114)

#### Description

Enable extra rules from
[gofumpt](https://golangci-lint.run/usage/formatters/#gofumpt) that also
fixes paramTypeCombine from go-critic

Also defines `go.opentelemetry.io/otel` as in
https://github.com/open-telemetry/opentelemetry-go-contrib/pull/7637

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

semconv/internal/http.go

@@ -104,7 +104,7 @@ func (sc *SemanticConventions) NetAttributesFromHTTPRequest(
 // It handles both IPv4 and IPv6 addresses. If the host portion is not recognized
 // as a valid IPv4 or IPv6 address, the `ip` result will be empty and the
 // host portion will instead be returned in `name`.
-func hostIPNamePort(hostWithPort string) (ip string, name string, port int) {
+func hostIPNamePort(hostWithPort string) (ip, name string, port int) {
 	var (
 		hostPart, portPart string
 		parsedPort         uint64

semconv/internal/http_test.go

@@ -10,13 +10,12 @@ import (
 	"strings"
 	"testing"
 
-	"go.opentelemetry.io/otel/trace"
-
 	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/trace"
 )
 
 type tlsOption int