feat: proxmox idlewatcher (#88)

* feat: idle sleep for proxmox LXCs

* refactor: replace deprecated docker api types

* chore(api): remove debug task list endpoint

* refactor: move servemux to gphttp/servemux; favicon.go to v1/favicon

* refactor: introduce Pool interface, move agent_pool to agent module

* refactor: simplify api code

* feat: introduce debug api

* refactor: remove net.URL and net.CIDR types, improved unmarshal handling

* chore: update Makefile for debug build tag, update README

* chore: add gperr.Unwrap method

* feat: relative time and duration formatting

* chore: add ROOT_DIR environment variable, refactor

* migration: move homepage override and icon cache to $BASE_DIR/data, add migration code

* fix: nil dereference on marshalling service health

* fix: wait for route deletion

* chore: enhance tasks debuggability

* feat: stdout access logger and MultiWriter

* fix(agent): remove agent properly on verify error

* fix(metrics): disk exclusion logic and added corresponding tests

* chore: update schema and prettify, fix package.json and Makefile

* fix: I/O buffer not being shrunk before putting back to pool

* feat: enhanced error handling module

* chore: deps upgrade

* feat: better value formatting and handling

---------

Co-authored-by: yusing <yusing@6uo.me>

internal/gperr/utils.go

@@ -1,9 +1,10 @@
 package gperr
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
+
+	"encoding/json"
 )
 
 func newError(message string) error {
@@ -41,6 +42,18 @@ func Wrap(err error, message ...string) Error {
 	return &baseError{fmt.Errorf("%s: %w", message[0], err)}
 }
 
+func Unwrap(err error) Error {
+	//nolint:errorlint
+	switch err := err.(type) {
+	case interface{ Unwrap() []error }:
+		return &nestedError{Extras: err.Unwrap()}
+	case interface{ Unwrap() error }:
+		return &baseError{err.Unwrap()}
+	default:
+		return &baseError{err}
+	}
+}
+
 func wrap(err error) Error {
 	if err == nil {
 		return nil