treewide: add gofmt linter

Change-Id: Ic0d8450b46790c4dc797b117634227be9a48de01
Reviewed-on: https://review.monogon.dev/c/monogon/+/3827
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
diff --git a/build/analysis/gofmt/BUILD.bazel b/build/analysis/gofmt/BUILD.bazel
new file mode 100644
index 0000000..2c5835b
--- /dev/null
+++ b/build/analysis/gofmt/BUILD.bazel
@@ -0,0 +1,13 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "gofmt",
+    srcs = ["gofmt.go"],
+    importpath = "source.monogon.dev/build/analysis/gofmt",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//build/analysis/lib",
+        "@com_github_golangci_gofmt//gofmt",
+        "@org_golang_x_tools//go/analysis",
+    ],
+)