Deprecations for styles v8

[gfellerph]

This ticket lists all deprecations or breaking changes for @swisspost/design-system-styles v7.

### Deprecated
- [ ] https://github.com/swisspost/design-system/issues/825
- [ ] https://github.com/swisspost/design-system/issues/952
- [ ] https://github.com/swisspost/design-system/issues/1096
- [ ] https://github.com/swisspost/design-system/issues/1248
- [ ] https://github.com/swisspost/design-system/issues/1194
- [ ] https://github.com/swisspost/design-system/issues/1294
- [ ] https://github.com/swisspost/design-system/pull/1551
- [ ] https://github.com/swisspost/design-system/issues/352
- [ ] https://github.com/swisspost/design-system/issues/1785
- [ ] https://github.com/swisspost/design-system/pull/1837
- [ ] https://github.com/swisspost/design-system/pull/1945
- [ ] https://github.com/swisspost/design-system/issues/2014
- [ ] https://github.com/swisspost/design-system/pull/2045
- [ ] https://github.com/swisspost/design-system/issues/2041
- [ ] https://github.com/swisspost/design-system/issues/2096
- [ ] https://github.com/swisspost/design-system/issues/2196
- [ ] https://github.com/swisspost/design-system/issues/2863
- [ ] https://github.com/swisspost/design-system/issues/2889
- [ ] https://github.com/swisspost/design-system/issues/3045

### Breaking changes
- [ ] https://github.com/swisspost/design-system/issues/1195
- [ ] https://github.com/swisspost/design-system/issues/2016
- [ ] https://github.com/swisspost/design-system/issues/2032
- [ ] https://github.com/swisspost/design-system/issues/826
- [ ] https://github.com/swisspost/design-system/issues/1274
- [ ] https://github.com/swisspost/design-system/issues/1301
- [ ] https://github.com/swisspost/design-system/issues/1302
- [ ] https://github.com/swisspost/design-system/issues/1303
- [ ] https://github.com/swisspost/design-system/issues/1304
- [ ] https://github.com/swisspost/design-system/issues/1305
- [ ] https://github.com/swisspost/design-system/issues/1991
- [ ] https://github.com/swisspost/design-system/issues/1992
- [ ] https://github.com/swisspost/design-system/issues/2202
- [ ] https://github.com/swisspost/design-system/issues/2224
- [ ] https://github.com/swisspost/design-system/issues/2225
- [ ] https://github.com/swisspost/design-system/issues/2226
- [ ] #2399
- [ ] https://github.com/swisspost/design-system/issues/2716
- [ ] https://github.com/swisspost/design-system/issues/2782
- [ ] https://github.com/swisspost/design-system/issues/3090
- [ ] https://github.com/swisspost/design-system/issues/3091