create a modal for form submission and create cpt post on submission

[JordynT]

right now we are using the form to post plugin, but will need to actually create our own modal that will pop up with a form of only the currently active pledge-options as well and the pledger's contact information and name on the front-end. On submssion of the form it will fill in a pledges cpt post with the donator's information. this modal needs to be linked to each pledge-option on the front-end as well as the 'donate-now' button on the front-end. if a customer clicks on a pledge-option to make the donation, that specific pledge amount can be already pre-checked on the form if possible.