Ad placement essential dapps

[0xdeval]

What to do?

We also need to add Slise banners to the following essential dapps:

1. Swap
2. Multisend

Should be completed with:

• Ad placement on the marketplace #3082
  and included to a patch release

Swap ad placement

Similar to how it was on Swapscout:

• Only a mobile banner (320x100) on the desktop devices
• Disable the banner for mobile devices
• We should always be able to disable a banner using an env: NEXT_PUBLIC_AD_SLISE_SWAP_DAPP = true/false

Multisend ad placement

Add an ad placement under the widget itself:

• Big desktop banner (728x90)
• Don't show a banner on mobile devices, only on desktop
• We should always be able to disable a banner using an env: NEXT_PUBLIC_AD_SLISE_MULTISEND_DAPP = true/false