Add Similarweb (#6455)

* Add Similarweb

* Fixing file name

* Update documentation
Co-authored-by: Michael Loßin <github@michael-lossin.de>

* Update keywords
Co-authored-by: Michael Loßin <github@michael-lossin.de>
Co-authored-by: Michael Loßin <github@michael-lossin.de>

entries/s/similarweb.com.json

+{
+	"Similarweb": {
+		"domain": "similarweb.com",
+		"tfa": [
+			"email"
+		],
+		"documentation": "https://support.similarweb.com/hc/en-us/articles/360016545238",
+		"keywords": [
+			"marketing"
+		]
+	}
+}
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img/s/similarweb.com.svg

+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22.46 21.11"><path fill="#f4732a" d="M20.69 4.74A10.85 10.85 0 0 0 15.76.51l-.6-.2a7.19 7.19 0 0 0-2-.31 4 4 0 0 0-3.1 6.43l-.24-.32a4.7 4.7 0 0 0 .39.52 17.1 17.1 0 0 0 2.64 2.42c2.8 2.17 4.62 4.1 4.77 6.48a8.14 8.14 0 0 1-.62 4.38s-.2.36-.07.46.2.1.43-.05a11.52 11.52 0 0 0 3.18-3.12 11.36 11.36 0 0 0 .18-12.46Z"/><path fill="#092540" d="m12.18 12.89-1.76-1.45c-3.68-2.68-5.6-5.58-4.54-9.15a8.28 8.28 0 0 1 .34-.95c.14-.31.26-.55-.3-.28a11.31 11.31 0 0 0-4 16.27 8.61 8.61 0 0 0 2 2c3.88 2.86 7.21 1.35 7.21 1.35a4.58 4.58 0 0 0 1-7.82Z"/></svg>
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