Separate includes files and example files / Add additional, visualized examples / Elaborate README.md

[LimHyungTae]

Dear @Ecstasy-EC:

Hello there Yixi, I'd like to do PR to your ikd-tree repository. Your fantastic method deserves to be nicer!

[Features]

• Separate includes files and example files
• Add two examples (Also, I follow your code format...In fact I hate your combination format of the Snake case and Pascal case lol)
  • In particular, the public function Search_Points_by_box is added. Please refer to codes.
• Update README
  • In particular, build commands are added
  • Visualized results are added

As you're an HKUSTian, so I utilized livox-loam to get the Red Bird Sundial pcd file 😄

In addition, my large_scale_map.pcd is used for an example 3, i.e., the async example. I think this file can be substituted by any file. If you'd like to use this file, it would also be better to upload large_scale_map.pcd on your lab's official drive (e.g. Google drive). If then, please README.md appropriately!

Cheers~

[Ecstasy-EC]

Hello HyungTae,

Thanks for your great contributions! I have gone through your commits and all of them seem OK to be merged. I will make further tests and merge them next week before I upgrade the codes.

Btw, I am a HKUian but not HKUSTian though I am very very familiar with HKUST lol.

Cheers!

[Ecstasy-EC]

Hey @LimHyungTae !
Your codes are running well and everything looks fine. But I got one question. What are the files in /.idea? I found them not related to any codes and everything works fine after deleting them. If they are not required by any codes, I will remove them before I merge your pull request.

[LimHyungTae]

Oh, it is a kind of .vscode folder, which is not necessary to run codes. Please remove the '.idea'. Thank you bro I hope to see you at ICRA'22~~ :)

[Ecstasy-EC]

@LimHyungTae
OK I got it. Gonna merge it tomorrow and move forward to the new version. Thanks a lot for your contributions bro!

And unfortunately, I won't appear in the ICRA 2022 since the ikd-tree was not submitted to it. It was integrated and submitted to a journal together with FAST-LIO2(link in my README). Anyway, best wishes to you and your research!