Add configuration files and update project documentation

- Introduced .editorconfig for consistent coding styles across the project.
- Added .golangci.yml for Go linting configuration.
- Updated AGENTS.md to clarify project structure and components.
- Enhanced CONTRIBUTING.md with Makefile usage for common tasks.
- Updated Dockerfiles to use Go 1.24 and improved build instructions.
- Refined README.md and deployment documentation for clarity.
- Added testing documentation in testing.md for backend and frontend tests.
- Introduced Makefile for streamlined development commands and tasks.

go.mod

@@ -1,19 +1,18 @@
 module github.com/andyleap/hnh-map
 
-go 1.21
+go 1.24.0
+
+toolchain go1.24.13
 
 require (
-	github.com/go-chi/chi/v5 v5.1.0
-	go.etcd.io/bbolt v1.3.3
-	golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073
-	golang.org/x/image v0.0.0-20200119044424-58c23975cae1
-	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
+	github.com/go-chi/chi/v5 v5.2.5
+	go.etcd.io/bbolt v1.4.3
+	golang.org/x/crypto v0.47.0
+	golang.org/x/image v0.30.0
+	golang.org/x/oauth2 v0.34.0
 )
 
 require (
-	cloud.google.com/go v0.34.0 // indirect
-	github.com/golang/protobuf v1.2.0 // indirect
-	golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 // indirect
-	golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 // indirect
-	google.golang.org/appengine v1.4.0 // indirect
+	cloud.google.com/go/compute/metadata v0.3.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
 )