BUG: fixed plotting of boolean dataframes
Boolean data was not recognised as plottable data. Adding it to the list of valid dtypes fixed this and allows plotting.

- [x] closes #23719
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Hello @BSchilperoort! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/plotting/_core.py`](https://github.com/BSchilperoort/pandas/blob/e0888a90144758583b3bc2a92ed9ffb18508338a/pandas/plotting/_core.py) !

 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=h1) Report
> Merging [#23813](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/df5eeece8ed28462832ee6e762192629c446670c?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23813/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23813   +/-   ##
=======================================
  Coverage   92.28%   92.28%           
=======================================
  Files         161      161           
  Lines       51457    51457           
=======================================
  Hits        47489    47489           
  Misses       3968     3968
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.68% <ø> (ø)` | :arrow_up: |
| #single | `42.31% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/plotting/\_core.py](https://codecov.io/gh/pandas-dev/pandas/pull/23813/diff?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb3JlLnB5) | `83.63% <ø> (ø)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=footer). Last update [df5eeec...e0888a9](https://codecov.io/gh/pandas-dev/pandas/pull/23813?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 Needs tests and a release note.

I would probably include a new keyword `include_bool` for whether or not boolean data should be included. Currently, this will be a breaking change for people relying on boolean data being dropped. I don't have a strong opinion on what the long-term behavior should be, but for now we can make it `False` or `None` if we want to issue a warning and change it to True in the future. pls merge master, needs a test & a whatsnew note. Closing as stale. Ping if you'd like to continue