A+E Networks is getting into business with Reese Witherspoon’s Hello Sunshine. The two companies have struck a deal under which Hello Sunshine will develop lifestyle shows for A+E’s Home Made Nation content hub — which includes programming blocks on A&E and FYI and on the company’s FAST channels. A+E announced the deal Wednesday as part of its upfront pitch to advertisers. The first series of the agreement is called Country House Hunters, which will follow couples who — you guessed it — are looking to buy homes in the country. It’s set to premiere in the summer and will join…