Updates to spacing tokens, table headers, breadcrumb and badge components

[davyd-akamai]

1. Breadcrumb text and icon tokens now have a default, hover and active states:

• Text token was split into text.default, text.hover and text.active tokens;
• Icon token was split into icon.default and icon.hover tokens in a collapse and withDropdown variant;
• Default variant of a breadcrumb was renamed to normal to avoid duplications with a text property;

2. Updates to spacing tokens.

Rem values were replaced with px values.
All spacing tokens were renamed and now contain prefix 's' and it's value number inside of the name:

• Spacing token 0 now is s0 (0px);
• Spacing token 10 now is s2 (2px);
• Spacing token 20 now is s4 (4px);
• Spacing token 30 now is s6 (6px);
• Spacing token 40 now is s8 (8px);
• Spacing token 50 now is s12 (12px);
• Spacing token 60 now is s16 (16px);
• Spacing token 70 now is s24 (24px);
• Spacing token 80 now is s32 (32px);
• Spacing token 90 now is s48 (48px);

Introduced new spacing tokens:

• Spacing token s20 (20px);
• Spacing token s28 (28px);
• Spacing token s36 (36px);
• Spacing token s40 (40px);
• Spacing token s64 (64px);
• Spacing token s72 (72px);
• Spacing token s96 (96px);

3. Updates to table headers:

• The background token in the headerFilled variant now uses the alias.background.neutralSubtle token;
• Text and icon now use the alias.content.text.primary and alias.content.icon.primary tokens, respectively;
• A new border token has been introduced for the headerFilled and headerNested variants, using the alias.border.neutral token;

4. Other changes:

• The alias.border.neutral token is now connected to the global.neutral.50 global token in both modes;
• The statusIcon token in the secondary notification banner now uses the alias.content.icon.secondary.default token;
• A new badge group type accent has been introduced;
• A Multi-select feature for Segmented buttons has been introduced;
• The old badge styles have been moved under the subtle group;
• The tokens collection has been renamed from CDS to Core;