gRPC Gateway Removal (#14089)

* wip passing e2e

* reverting temp comment

* remove unneeded comments

* fixing merge errors

* fixing more bugs from merge

* fixing test

* WIP moving code around and fixing tests

* unused linting

* gaz

* temp removing these tests as we need placeholder/wrapper APIs for them with the removal of the gateway

* attempting to remove dependencies to gRPC gateway , 1 mroe left in deps.bzl

* renaming flags and other gateway services to http

* goimport

* fixing deepsource

* git mv

* Update validator/package/validator.yaml

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* Update validator/package/validator.yaml

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* Update cmd/beacon-chain/flags/base.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* Update cmd/beacon-chain/flags/base.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* Update cmd/beacon-chain/flags/base.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* addressing feedback

* missed lint

* renaming import

* reversal based on feedback

* fixing web ui registration

* don't require mux handler

* gaz

* removing gRPC service from validator completely, merged with http service, renames are a work in progress

* updating go.sum

* linting

* trailing white space

* realized there was more cleanup i could do with code reuse

* adding wrapper for routes

* reverting version

* fixing dependencies from merging develop

* gaz

* fixing unit test

* fixing dependencies

* reverting unit test

* fixing conflict

* updating change log

* Update log.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

* gaz

* Update api/server/httprest/server.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

* addressing some feedback

* forgot to remove deprecated flag in usage

* gofmt

* fixing test

* fixing deepsource issue

* moving deprecated flag and adding timeout handler

* missed removal of a flag

* fixing test:

* Update CHANGELOG.md

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* addressing feedback

* updating comments based on feedback

* removing unused field for now, we can add it back in if we need to use the option

* removing unused struct

* changing api-timeout flag based on feedback

---------

Co-authored-by: Radosław Kapka <rkapka@wp.pl>
Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

cmd/flags.go

@@ -6,6 +6,7 @@ import (
 	"math"
 	"slices"
 	"strings"
+	"time"
 
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/urfave/cli/v2"
@@ -267,10 +268,10 @@ var (
 		Value: DefaultDataDir(),
 	}
 	// ApiTimeoutFlag specifies the timeout value for API requests in seconds. A timeout of zero means no timeout.
-	ApiTimeoutFlag = &cli.IntFlag{
+	ApiTimeoutFlag = &cli.DurationFlag{
 		Name:  "api-timeout",
 		Usage: "Specifies the timeout value for API requests in seconds.",
-		Value: 120,
+		Value: 10 * time.Second,
 	}
 	// JwtOutputFileFlag specifies the JWT file path that gets generated into when invoked by generate-jwt-secret.
 	JwtOutputFileFlag = &cli.StringFlag{