Add a pre-commit hook to check all files (#4046)

Author: hanzo

.pre-commit-hooks.yaml

@@ -1,8 +1,16 @@
 - id: golangci-lint
   name: golangci-lint
-  description: Fast linters runner for Go.
+  description: Fast linters runner for Go. Note that only modified files are linted, so linters like 'unused' that need to scan all files won't work as expected.
   entry: golangci-lint run --new-from-rev HEAD --fix
   types: [go]
   language: golang
   require_serial: true
   pass_filenames: false
+- id: golangci-lint-full
+  name: golangci-lint-full
+  description: Fast linters runner for Go. Runs on all files in the repo. Use this hook if you use pre-commit in CI.
+  entry: golangci-lint run --fix
+  types: [go]
+  language: golang
+  require_serial: true
+  pass_filenames: false