Improved dev environment (#2211)

* Improved dev env setup

* Cleanup duplicate checks

* Applied PR feedback

* Updated go.mod/go.sum

* go mod tidy

* Update .devcontainer/devcontainer.json

* Update pkg/http/server_test.go

Co-authored-by: Jan Larwig <jan@larwig.com>

* Create launch.json

* Update .devcontainer/Dockerfile

* Apply suggestions from code review

---------

Co-authored-by: Jan Larwig <jan@larwig.com>

.pre-commit-config.yaml

@@ -0,0 +1,13 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.3.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-added-large-files
+  - repo: https://github.com/dnephin/pre-commit-golang
+    rev: v0.5.0
+    hooks:
+    - id: golangci-lint
+    - id: go-build