feat(ui5-button): implement sap_horizon theme

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feat(ui5-button): implement sap_horizon theme
feat(ui5-toggle button): implement sap_horizon theme

[ilhan007]

all params start with --_ui5_button, not --sap_button

[ilhan007]

Button

The focus state on warning/attention button seems wrong

Down state for all types seems wrong - the respective outline is missing.

[tsanislavgatev]

The focus on fiori_3 regular toggle button, when in active state is invisible.

[tsanislavgatev]

There is a misalignment between two focuses of the emphasized button

[ilhan007]

Can you check if the focus color when button is pressed down is correct in Fiori_3 (and FIori_3 Dark as well), because it changed with the current PR, but I guess it should not.
https://user-images.githubusercontent.com/15702139/138696873-7b310b2e-d644-4f36-94c7-fdc426ccc1fb.mov

Which of the two hover states over a default type button is correct

openui5 nightly

in this PR

Changes needed

[tsanislavgatev]

@ilhan007 The focus is indeed broken in the PR, the colors on press should be inverted (black to white).
For the question on the button. Hover should be in black color, the down(active) state should be in blue.

[terezamch]

The hover should only apply shadow. the blue text color is applied when the button becomes active.

[tsanislavgatev]

After the last changes, it looks good. Checked the visual and with ui5. I think the button is in good state at the moment, and the comments made, were fixed. @ilhan007

outdated

[ilhan007]

After the last changes, it looks good. Checked the visual and with ui5. I think the button is in good state at the moment, and the comments made, were fixed. @ilhan007

All right, I won't test further, you can merge the PR whenever you decide