Commit Message: [#38557] golang: add callback method for http plugin config destruction

Additional Description:

This enables fine grained control over the lifecycle of golang filter config in sync with C++.
Some use cases store states and resources in the config object that needs to be cleaned when config is deleted or renewed.
The current design breaks the config parser API by introducing a Destroy function in StreamFilterConfigParser. A PassThroughStreamFilterConfigParser is available to help code adaptation.
Given an existing parser

import "github.com/envoyproxy/envoy/contrib/golang/common/go/api"

type parser struct {
}

func (p *parser) Parse(any *anypb.Any, callbacks api.ConfigCallbackHandler) (interface{}, error) {
	...
}

func (p *parser) Merge(parent interface{}, child interface{}) interface{} {
	...
}

The new one just needs to compose with the passthrough

type parser struct {
	api.PassThroughStreamFilterConfigParser
}

Risk Level: Low

Testing: A test in config_test.cc was added to ensure Destroy function is being called on the config instance.

Docs Changes: none

Release Notes:

added http golang filter config destroy callback. When a config gets deleted from envoy, the go plugin calls the
Destroy function on the config parser instance. This introduces a breaking change in the golang parser interface.

Platform Specific Features:
[Optional Runtime guard:]
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[Optional Fixes commit #PR or SHA]
[Optional Deprecated:]
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