Build New Package with EDKII OVMF

["Shakthi Pradeep (tpradeep)" <tpradeep@cisco.com>]

    Hello All,
    
    I am new to EDKII (UEFI) development. Cloned UDK2018 branch and modified Conf/target.txt to build OVMF package. OVMF.fd boots up fine on QEMU
    
    Now I am trying to create a new package and build. I am following EDK II Module Writer's Guide v 7.0
    
    I have created a SampleModulePkg with an SampleHelloWorld application in it. Made sure SampleModulePkg.dsc, SampleModulePkg.dec and Application/HelloWorld/HelloWorld.inf has correct content. 
    
    When I run build command, I don’t see SampleModulePkg getting built
    
    Am I missing something?
    
    Regards,
    Shakthi