fix wc header/footer theme

src/pages/footer.tsx

@@ -2,5 +2,10 @@ import React, { ReactElement } from "react"
 import { Footer as FooterCmp } from "@onegeo-suite/gatsby-theme-onegeo"
 
 export default function Footer(): ReactElement {
-    return <FooterCmp />
+    const theme = "onegeo"
+    return (
+        <div data-theme={theme}>
+            <FooterCmp />
+        </div>
+    )
 }

src/pages/header.tsx

@@ -2,5 +2,10 @@ import React, { ReactElement } from "react"
 import { Header as HeaderCmp } from "@onegeo-suite/gatsby-theme-onegeo"
 
 export default function Header(): ReactElement {
-    return <HeaderCmp />
+    const theme = "onegeo"
+    return (
+        <div data-theme={theme}>
+            <HeaderCmp />
+        </div>
+    )
 }