[ABLD-408] L0, some internal/tools (#48260)

### What does this PR do?

migrate
- internal/tools/independent-lint/BUILD.bazel
- internal/tools/modformatter/BUILD.bazel

Based on #48250, but fixes a go.mod which was inconsistent.

Co-authored-by: joseph.gette <joseph.gette@datadoghq.com>

Author: aiuto

BUILD.bazel

@@ -13,8 +13,6 @@ package(default_visibility = ["//visibility:public"])
 # gazelle:exclude internal/remote-agent
 # gazelle:exclude internal/third_party
 # gazelle:exclude internal/tools/gotest-custom
-# gazelle:exclude internal/tools/independent-lint
-# gazelle:exclude internal/tools/modformatter
 # gazelle:exclude pkg/aggregator
 # gazelle:exclude pkg/api
 # gazelle:exclude pkg/cli

internal/tools/independent-lint/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "independent-lint_lib",
+    srcs = ["independent.go"],
+    importpath = "github.com/DataDog/datadog-agent/internal/tools/independent-lint",
+    visibility = ["//visibility:private"],
+    deps = [
+        "@org_golang_x_mod//modfile",
+        "@org_golang_x_mod//module",
+    ],
+)
+
+go_binary(
+    name = "independent-lint",
+    embed = [":independent-lint_lib"],
+    visibility = ["//:__subpackages__"],
+)

internal/tools/independent-lint/go.mod

@@ -1,4 +1,4 @@
-module github.com/DataDog/datadog-agent/cmd/independent-lint
+module github.com/DataDog/datadog-agent/internal/tools/independent-lint
 
 go 1.25.0
 

internal/tools/modformatter/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "modformatter_lib",
+    srcs = ["modformatter.go"],
+    importpath = "github.com/DataDog/datadog-agent/internal/tools/modformatter",
+    visibility = ["//visibility:private"],
+    deps = [
+        "@org_golang_x_mod//modfile",
+        "@org_golang_x_mod//module",
+    ],
+)
+
+go_binary(
+    name = "modformatter",
+    embed = [":modformatter_lib"],
+    visibility = ["//:__subpackages__"],
+)