feat(tile-manager): add schemas

[SisIvanova]

Related to IgniteUI/igniteui-webcomponents/issues/1379

[yradoeva]

Drag & Drop (Slide)
Material Light

• The blue placeholder should have a 1px border primary.500
  Figma

WebC

Material Dark

• The blue placeholder should have a 1px border primary.500

Fluent Light & Dark

• The blue placeholder should have a 1px border primary.500

Bootstrap Light & Dark

• The blue placeholder should have a 1px border primary.500

Indigo Light / Dark

• The placeholder should have a 1px border primary.500 / primary.300

[yradoeva]

After discussion in the UX design team, we decided that the resize indicators color and the border of the tile while in resizeMode: hover or resizeMode: always need to be updated for better visibility. The new colors will be the same for tile border and indicators and will be as the border color of the placeholder element, meaning:
primary.500 for all themes light and dark mode, except for Indigo dark - primary.300.

Hover state, when the resizing is off, is not changed.

I am currently updating the design handoff and I'll let you know when it's ready.

Below are the changed tiles:

[yradoeva]

Tile resizing - all themes, light and dark mode
The original tile being resized (the one that stays at place) should not have an overlay with the color of the placeholder-background:

Figma - Material

WebC - Material light

.

WebC - Material dark

[yradoeva]

Indigo Dark mode:
Tile - idle state - header - The icon color of the flat buttons in the header looks more transparent compared to the Figma design (screenshot: implementation is pasted over the design). When inspecting it, I see the color is right - white 80%, but for some reason it looks lighter.