Re-compress png images losslessly via zopflipng

[PeterDaveHello]

21 png images optimized as below:

 docs/public/static/images/icons/icon-144x144.png                    | Bin 6143 -> 1767 bytes
 docs/public/static/images/icons/icon-150x150.png                    | Bin 6589 -> 1818 bytes
 docs/public/static/images/icons/icon-152x152.png                    | Bin 6761 -> 1849 bytes
 docs/public/static/images/icons/icon-192x192.png                    | Bin 8738 -> 2379 bytes
 docs/public/static/images/icons/icon-256x256.png                    | Bin 11801 -> 3341 bytes
 docs/public/static/images/icons/icon-310x310.png                    | Bin 14354 -> 4192 bytes
 docs/public/static/images/icons/icon-32x32.png                      | Bin 1489 -> 433 bytes
 docs/public/static/images/icons/icon-64x64.png                      | Bin 2685 -> 784 bytes
 docs/public/static/images/icons/icon-70x70.png                      | Bin 3052 -> 874 bytes
 docs/public/static/images/icons/icon.png                            | Bin 1489 -> 433 bytes
 docs/src/assets/images/XD_1600x600_InvariantCulture_Default.png     | Bin 108902 -> 92965 bytes
 docs/src/assets/images/acrylic.png                                  | Bin 108203 -> 76616 bytes
 docs/src/assets/images/acrylic_1600_InvariantCulture_Default.png    | Bin 118871 -> 98805 bytes
 docs/src/assets/images/icon-32x32.png                               | Bin 1489 -> 433 bytes
 docs/src/assets/images/reveal.png                                   | Bin 191527 -> 162308 bytes
 docs/src/assets/images/reveal_1600x600_InvariantCulture_Default.png | Bin 193848 -> 175350 bytes
 docs/src/assets/images/toolkits.png                                 | Bin 105066 -> 79588 bytes
 docs/src/routes/Showcase/images/antcores.png                        | Bin 415438 -> 388563 bytes
 images/react-uwp-styles-colors.png                                  | Bin 938707 -> 546753 bytes
 src/__assets__/images/devOffice_banner_codeSamples_1900x200.png     | Bin 21402 -> 18955 bytes
 src/__assets__/images/devOffice_banner_searchResults_1900x200.png   | Bin 5861 -> 4991 bytes

[myxvisual]

@PeterDaveHello thanks for PR~