Added sets of hover& pressed tokens. Also updated warning/success/inverses

[Akatori-Design]

Added || LIGHT & DARK THEMES ||

Added .default-hover & .default-pressed colors added for primary, success, error, warning (but not for info)

- primary.default-hover
- primary.default-pressed

- success.default-hover
- success.default-pressed

- warning.default-hover
- warning.default-pressed

- error.default-hover
- error.default-pressed

Edited || LIGHT THEME ||

1. Edited success.default , success.muted, warning.default, warning.muted to be more accessible
2. Edited Inversecolors from #FCFCFC to #FFFFFF (white000)

- success.default
- success.muted

- warning.default
- warning.muted

- primary.inverse
- error.inverse
- success.inverse
- warning.inverse
- info.inverse

|| DARK THEME ||

1. Edited error.default, error.muted for accessibility.
2. Edited Inverse colors from #FCFCFC to #141618 (grey900)

- error.default
- error.muted

- primary.inverse
- error.inverse
- success.inverse
- warning.inverse
- info.inverse

Fixes: #580

[metamaskbot]

Builds ready [8df76cd]

Storybook: Storybook

[metamaskbot]

Builds ready [8189d35]

Storybook: Storybook

[metamaskbot]

Builds ready [540e435]

Storybook: Storybook

[metamaskbot]

Builds ready [f6d2104]

Storybook: Storybook

[metamaskbot]

Builds ready [b3e463d]

Storybook: Storybook

[metamaskbot]

Builds ready [07be471]

Storybook: Storybook