[NV-GO-1] API 🚀: Validate MX Record Setup for Inbound Parse Functionality

[NonsoAmadi10]

What does this PR do?

• Adds Inbound Parser functionality for validating mx records
• Fixes issue [NV-GO-1] API 🚀: Validate MX Record Setup for Inbound Parse Functionality #8

How should this be tested manually?

• Run the following:

package main

import (
	"context"
	"fmt"
	novu "github.com/novuhq/go-novu/lib"
	"log"
)

func main() {
	apiKey := "<REPLACE_WITH_YOUR_API_KEY>"
        ctx := context.Background()
        
        novuClient := novu.NewAPIClient(apiKey, &novu.Config{})
        resp, err := novuClient.InboundParser.Get(ctx)
        if err != nil {
		log.Fatal("novu error", err.Error())
		return
	}

	fmt.Println(resp.Data.MxRecordConfigured)
	
	}

Any Background Context?

• N/A

[NonsoAmadi10]

@unicodeveloper and @prajjwaldimri please here is my contribution, I appreciate any feedback

[unicodeveloper]

@unicodeveloper and @prajjwaldimri please here is my contribution, I appreciate any feedback

Thanks for your contribution. Merging this in now. @NonsoAmadi10

[unicodeveloper]

@NonsoAmadi10 I had to revert this #27

Please check the code & test again, there is a nil pointer dereference error. See here for reference https://github.com/novuhq/go-novu/actions/runs/6080648872/job/16494937616

[NonsoAmadi10]

Hello @unicodeveloper , thank you very much for the feedback. I will implement it and circle back to you.

[unicodeveloper]

@NonsoAmadi10 Please any update here?

[NonsoAmadi10]

@NonsoAmadi10 Please any update here?

Yes please, I have raised a new PR for this issue here #29