chore: Update images in readme (#44667)

* chore: image files

* chore: typo and links

* chore: update logo

* chore: link screenshots

* chore: change image width

* chore: border radius for images

* chore: more formatting

erpnext/public/images/v16/erpnext.svg

@@ -0,0 +1,5 @@
+<svg width="101" height="100" viewBox="0 0 101 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M69.3721 38.0715H61.6579V30.3573C61.6579 25.4287 57.6579 21.4287 52.7293 21.4287H46.7649C41.8363 21.4287 37.8363 25.4287 37.8363 30.3573V38.0715H22.9792V45.2143H44.9792V28.5716H54.515V45.2143H71.1578V54.75H61.6221H54.515V71.393H44.9792V54.75H22.9792V61.8928H37.8363V69.6072C37.8363 74.5358 41.8363 78.5358 46.7649 78.5358H52.7293C57.6579 78.5358 61.6579 74.5358 61.6579 69.6072V61.8928H69.3721C74.3006 61.8928 78.3006 57.8928 78.3006 52.9643V47C78.3006 42.0715 74.3006 38.0715 69.3721 38.0715Z" fill="white"/>
+<path d="M72.0506 0H29.1935C13.4139 0 0.62207 12.7919 0.62207 28.5714V71.4286C0.62207 87.2081 13.4139 100 29.1935 100H72.0506C87.8302 100 100.622 87.2081 100.622 71.4286V28.5714C100.622 12.7919 87.8302 0 72.0506 0Z" fill="#0089FF"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M68.0067 32.945H66.3293H44.5235H33.6205V23.999H68.0067V32.945ZM44.5233 53.9122V66.2129H68.2861V75.1589H33.6204V44.9662H44.5233H66.3291V53.9122H44.5233Z" fill="white"/>
+</svg>