[Tooltip] Add arrow prop

[goleary]

• I have followed (at least) the PR section of the contributing guide.

Adding a prop to the Tooltip component so that users don't have to copy and paste code from docs to get an arrow (as it's a common case). Originally discussed here:

I made arrowGenerator a util function so that it can be used to create other types of tooltips (like the bootstrap example in the docs).

I also updated the docs to give an example of how to use this.

potential issues:

• I gave the function input & output no types, as I'm not aware of which ones should be used in this case:export default function arrowGenerator(color: any): any;
• I have not included a test as I'm not sure how to test that the arrow is displaying properly.

Closes #18243

[mui-pr-bot]

@material-ui/core: parsed: +0.37% , gzip: +0.31%
@material-ui/lab: parsed: +0.75% , gzip: +0.75%

Details of bundle changes.

Comparing: 9eb38da...f8c03f6

bundle	Size Change	Size	Gzip Change	Gzip
@material-ui/lab	▲ +1.28 kB (+0.75% )	171 kB	▲ +386 B (+0.75% )	51.6 kB
Tooltip	▲ +1.28 kB (+1.31% )	98.9 kB	▲ +359 B (+1.16% )	31.3 kB
SpeedDialAction	▲ +1.28 kB (+1.13% )	115 kB	▲ +343 B (+0.95% )	36.3 kB
@material-ui/core	▲ +1.28 kB (+0.37% )	351 kB	▲ +298 B (+0.31% )	95.9 kB
docs.main	▲ +1.27 kB (+0.21% )	606 kB	▲ +346 B (+0.18% )	193 kB
@material-ui/core[umd]	▲ +1.25 kB (+0.41% )	310 kB	▲ +293 B (+0.33% )	89.2 kB
@material-ui/styles	--	50.8 kB	--	15.4 kB
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Autocomplete	--	126 kB	--	39.8 kB
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ButtonGroup	--	80.4 kB	--	24.7 kB
Card	--	61.2 kB	--	19.1 kB
CardActionArea	--	73.4 kB	--	23.2 kB
CardActions	--	60.5 kB	--	18.9 kB
CardContent	--	60.4 kB	--	18.9 kB
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CardMedia	--	60.8 kB	--	19.1 kB
Checkbox	--	80.2 kB	--	25.1 kB
Chip	--	80.9 kB	--	24.7 kB
CircularProgress	--	62.5 kB	--	19.7 kB
ClickAwayListener	--	3.87 kB	--	1.56 kB
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colorManipulator	--	3.83 kB	--	1.52 kB
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CssBaseline	--	56 kB	--	17.5 kB
Dialog	--	80.9 kB	--	25.1 kB
DialogActions	--	60.5 kB	--	18.9 kB
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DialogTitle	--	62.7 kB	--	19.7 kB
Divider	--	61 kB	--	19.2 kB
docs.landing	--	55.8 kB	--	14.3 kB
Drawer	--	82.7 kB	--	25.6 kB
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ExpansionPanelActions	--	60.5 kB	--	19 kB
ExpansionPanelDetails	--	60.4 kB	--	18.9 kB
ExpansionPanelSummary	--	76.5 kB	--	24.1 kB
Fab	--	75.2 kB	--	23.3 kB
Fade	--	22 kB	--	7.6 kB
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FormControlLabel	--	63.9 kB	--	20.1 kB
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GridListTile	--	62.2 kB	--	19.5 kB
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LinearProgress	--	63.8 kB	--	19.9 kB
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List	--	60.8 kB	--	18.9 kB
ListItem	--	75.5 kB	--	23.5 kB
ListItemAvatar	--	60.5 kB	--	18.9 kB
ListItemIcon	--	60.6 kB	--	19 kB
ListItemSecondaryAction	--	60.4 kB	--	18.9 kB
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NativeSelect	--	75.2 kB	--	23.7 kB
NoSsr	--	2.19 kB	--	1.04 kB
OutlinedInput	--	72.5 kB	--	22.5 kB
Paper	--	60.7 kB	--	18.9 kB
Popover	--	81 kB	--	25 kB
Popper	--	28.5 kB	--	10.2 kB
Portal	--	2.87 kB	--	1.3 kB
Radio	--	81 kB	--	25.4 kB
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Rating	--	68.4 kB	--	21.9 kB
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Slide	--	24.1 kB	--	8.21 kB
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SnackbarContent	--	64.1 kB	--	20.1 kB
SpeedDial	--	84.4 kB	--	26.6 kB
SpeedDialIcon	--	63 kB	--	19.8 kB
Step	--	61 kB	--	19.1 kB
StepButton	--	80.7 kB	--	25.3 kB
StepConnector	--	61.1 kB	--	19.2 kB
StepContent	--	67.4 kB	--	21 kB
StepIcon	--	63.1 kB	--	19.6 kB
StepLabel	--	67 kB	--	21 kB
Stepper	--	63.2 kB	--	19.9 kB
styles/createMuiTheme	--	15.2 kB	--	5.36 kB
SvgIcon	--	61.5 kB	--	19.1 kB
SwipeableDrawer	--	90.1 kB	--	28 kB
Switch	--	79.5 kB	--	24.7 kB
Tab	--	74.7 kB	--	23.7 kB
Table	--	61 kB	--	19.1 kB
TableBody	--	60.5 kB	--	18.9 kB
TableCell	--	62.5 kB	--	19.6 kB
TableFooter	--	60.5 kB	--	18.9 kB
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TablePagination	--	139 kB	--	40.5 kB
TableRow	--	61 kB	--	19.1 kB
TableSortLabel	--	75.7 kB	--	23.9 kB
Tabs	--	83.8 kB	--	26.7 kB
TextareaAutosize	--	5.06 kB	--	2.11 kB
TextField	--	121 kB	--	35.4 kB
ToggleButton	--	74.5 kB	--	23.5 kB
ToggleButtonGroup	--	61.6 kB	--	19.4 kB
Toolbar	--	60.8 kB	--	19 kB
TreeItem	--	72 kB	--	22.7 kB
TreeView	--	64.8 kB	--	20.3 kB
Typography	--	62.1 kB	--	19.3 kB
useAutocomplete	--	12.1 kB	--	4.47 kB
useMediaQuery	--	2.49 kB	--	1.05 kB
Zoom	--	22.1 kB	--	7.6 kB

Generated by 🚫 dangerJS against f8c03f6

[oliviertassinari]

Great start

[oliviertassinari]

@goleary I'm not sure that we need a visual test for this feature. If we want to add one, I would recommend that we start an effort to clean up our visual tests, I suspect we have too many, that many aren't useful. The Argos-ci step starts to feel slow. But I doubt it's very important. It has been a long time since they were really useful. At least, since we have stopped heavy UI refactoring (minors).

updated

[oliviertassinari]

@goleary Thank you!