feat(ui): regional prompts spray n pray

Trying a lot of different things as I iterated, so this is smooshed into one big commit... too hard to split it now.

- Iterated on IP adapter handling and UI. Unfortunately there is an bug related to undo/redo. The IP adapter state is split across the `controlAdapters` slice and the `regionalPrompts` slice, but only the `regionalPrompts` slice supports undo/redo. If you delete the IP adapter and then undo/redo to a history state where it existed, you'll get an error. The fix is likely to merge the slices... Maybe there's a workaround.
- Iterated on UI. I think the layers are OK now.
- Removed ability to disable RP globally for now. It's enabled if you have enabled RP layers.
- Many minor tweaks and fixes.

invokeai/frontend/web/src/common/components/RgbColorPicker.tsx

@@ -0,0 +1,84 @@
+import type { ChakraProps } from '@invoke-ai/ui-library';
+import { CompositeNumberInput, Flex, FormControl, FormLabel } from '@invoke-ai/ui-library';
+import type { CSSProperties } from 'react';
+import { memo, useCallback } from 'react';
+import { RgbColorPicker as ColorfulRgbColorPicker } from 'react-colorful';
+import type { ColorPickerBaseProps, RgbColor } from 'react-colorful/dist/types';
+import { useTranslation } from 'react-i18next';
+
+type RgbColorPickerProps = ColorPickerBaseProps<RgbColor> & {
+  withNumberInput?: boolean;
+};
+
+const colorPickerPointerStyles: NonNullable<ChakraProps['sx']> = {
+  width: 6,
+  height: 6,
+  borderColor: 'base.100',
+};
+
+const sx: ChakraProps['sx'] = {
+  '.react-colorful__hue-pointer': colorPickerPointerStyles,
+  '.react-colorful__saturation-pointer': colorPickerPointerStyles,
+  '.react-colorful__alpha-pointer': colorPickerPointerStyles,
+  gap: 5,
+  flexDir: 'column',
+};
+
+const colorPickerStyles: CSSProperties = { width: '100%' };
+
+const numberInputWidth: ChakraProps['w'] = '3.5rem';
+
+const RgbColorPicker = (props: RgbColorPickerProps) => {
+  const { color, onChange, withNumberInput, ...rest } = props;
+  const { t } = useTranslation();
+  const handleChangeR = useCallback((r: number) => onChange({ ...color, r }), [color, onChange]);
+  const handleChangeG = useCallback((g: number) => onChange({ ...color, g }), [color, onChange]);
+  const handleChangeB = useCallback((b: number) => onChange({ ...color, b }), [color, onChange]);
+  return (
+    <Flex sx={sx}>
+      <ColorfulRgbColorPicker color={color} onChange={onChange} style={colorPickerStyles} {...rest} />
+      {withNumberInput && (
+        <Flex gap={5}>
+          <FormControl gap={0}>
+            <FormLabel>{t('common.red')[0]}</FormLabel>
+            <CompositeNumberInput
+              value={color.r}
+              onChange={handleChangeR}
+              min={0}
+              max={255}
+              step={1}
+              w={numberInputWidth}
+              defaultValue={90}
+            />
+          </FormControl>
+          <FormControl gap={0}>
+            <FormLabel>{t('common.green')[0]}</FormLabel>
+            <CompositeNumberInput
+              value={color.g}
+              onChange={handleChangeG}
+              min={0}
+              max={255}
+              step={1}
+              w={numberInputWidth}
+              defaultValue={90}
+            />
+          </FormControl>
+          <FormControl gap={0}>
+            <FormLabel>{t('common.blue')[0]}</FormLabel>
+            <CompositeNumberInput
+              value={color.b}
+              onChange={handleChangeB}
+              min={0}
+              max={255}
+              step={1}
+              w={numberInputWidth}
+              defaultValue={255}
+            />
+          </FormControl>
+        </Flex>
+      )}
+    </Flex>
+  );
+};
+
+export default memo(RgbColorPicker);