refactor: icon library update (#117)

* refactor: updated existing illustrative icons

to version 2.15.0

* feat: added new illustrative icons

* chore: aligned the naming

* chore: no visible changes

* chore: updated SEV icons styling

* feat: added new icons

* chore: added some comments on the icons place

* feat: added new icons

* refactor: added new icons

assets/icons/README.md

@@ -1,6 +1,6 @@
 # How to create and provide the technical icon files
 
-We're getting these icons by the DB Design System colleagues and process the following changes:
+We're getting these icons by the [DB Design System colleagues](https://dbsw-my.sharepoint.com/personal/maximilian_franzke_deutschebahn_com/_layouts/15/onedrive.aspx?id=%2Fteams%2FCXM%2ETeams%2DDDSTeam%2FShared%20Documents%2FDDS%20Team%2F01%2D%2DDesign%2DSystem%2F04%2D%2DFoundations%2F07%2D%2DIcons%2F04%2D%2DExchange%2DIcons%2F01%2D%2DFunctional&listurl=https%3A%2F%2Fdbsw%2Esharepoint%2Ecom%2Fteams%2FCXM%2ETeams%2DDDSTeam%2FShared%20Documents&viewid=0595d7bc%2Db96a%2D483a%2D8d53%2D87b3356ce9fc) and process the following changes:
 
 -   Minifications with [`ImageOptim`](https://imageoptim.com/mac)
 -   Adding some contents within the SVGs (these assets might get exported correctly in the future)

source/_patterns/icons/functional/functional-icons~action.json

@@ -532,6 +532,48 @@
 				}
 			]
 		},
+		{
+			"icon": "face_neutral",
+			"variants": [
+				{
+					"size": 32
+				},
+				{
+					"size": 24
+				},
+				{
+					"size": 20
+				}
+			]
+		},
+		{
+			"icon": "face_sad",
+			"variants": [
+				{
+					"size": 32
+				},
+				{
+					"size": 24
+				},
+				{
+					"size": 20
+				}
+			]
+		},
+		{
+			"icon": "face_smiling",
+			"variants": [
+				{
+					"size": 32
+				},
+				{
+					"size": 24
+				},
+				{
+					"size": 20
+				}
+			]
+		},
 		{
 			"icon": "filter",
 			"variants": [
@@ -800,6 +842,20 @@
 				}
 			]
 		},
+		{
+			"icon": "logbook",
+			"variants": [
+				{
+					"size": 32
+				},
+				{
+					"size": 24
+				},
+				{
+					"size": 20
+				}
+			]
+		},
 		{
 			"icon": "minus",
 			"variants": [