feat: initialize Go module with dependencies

- Add go.mod with Fiber web framework, JWT, GORM, and PostgreSQL driver
- Include all necessary dependencies for IDP API development
- Set up module path as git.secnex.io/secnex/idp-api
- Add comprehensive .gitignore for Go projects

go.mod

@@ -0,0 +1,53 @@
+module git.secnex.io/secnex/idp-api
+
+go 1.25.1
+
+require (
+	github.com/gofiber/contrib/swagger v1.3.0
+	github.com/gofiber/fiber/v2 v2.52.9
+	github.com/golang-jwt/jwt/v5 v5.3.0
+	github.com/google/uuid v1.6.0
+	golang.org/x/crypto v0.42.0
+	gorm.io/driver/postgres v1.6.0
+	gorm.io/gorm v1.31.0
+)
+
+require (
+	github.com/andybalholm/brotli v1.1.0 // indirect
+	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/go-openapi/analysis v0.21.4 // indirect
+	github.com/go-openapi/errors v0.20.4 // indirect
+	github.com/go-openapi/jsonpointer v0.20.0 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/loads v0.21.2 // indirect
+	github.com/go-openapi/runtime v0.26.2 // indirect
+	github.com/go-openapi/spec v0.20.11 // indirect
+	github.com/go-openapi/strfmt v0.21.8 // indirect
+	github.com/go-openapi/swag v0.22.4 // indirect
+	github.com/go-openapi/validate v0.22.3 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.6.0 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/klauspost/compress v1.17.9 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasthttp v1.51.0 // indirect
+	github.com/valyala/tcplisten v1.0.0 // indirect
+	go.mongodb.org/mongo-driver v1.13.1 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/sys v0.36.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)