Release v0.2.0

Changelog

[#43]: Xc-regions can be listed on sale using the newly added sale modal.

[#45]: Modal for unlisting regions from sale.

[#46 & #48]: Dashboard with filter options for browsing the regions listed on sale.

[#49]: A new page for transferring regions
Cross-chain region transfer from the contracts chain to the Coretime chain doesn't work yet, more details can be found here: paritytech/polkadot-sdk#3553

Full Changelog: v0.1.0...v0.2.0