Change to CheckBeamMP

[O1LER]

Changes all probablyup references to CheckBeamMP as well as adding a form to input IP and port

Requires the check.beammp.com api to accept key=value pairs

Feel free to change to a different method if this is not suitable

[O1LER]

Used an html form directly in the docs page:

<form action="https://check.beammp.com/api/v2/beammp/" method="get" target="_blank">
  <label for="ip">IP adress:</label>
  <input type="text" id="ip" name="ip"><br>
  <label for="port">Port:</label>
  <input type="text" id="port" name="port"><br>
  <input type="submit" value="CheckBeamMP">
</form>

Which opens a new tab going to a url with the following scheme

https://check.beammp.com/api/v2/beammp/?ip=127.0.0.1&port=30814

[Protogen187]

@O1LER the previous Pull request being merged has created 3 conflicts.

[Protogen187]

@O1LER will you be making any further changes?

[O1LER]

Are there changes necessary, does the method of calling the api work like i proposed it? If not, then theres no point in merging this

[Protogen187]

Are there changes necessary, does the method of calling the api work like i proposed it? If not, then theres no point in merging this

I have no way of testing that maybe @WiserTixx can help test the Port Checker.
Regarding the changes I was refering to the conflicts reported by GitHub.

[WiserTixx]

That doesn't work in the current version. However, I've made a version that does support that, along with the self check route (BeamMP/BeamMP-Server#426). But those changes haven't been deployed yet, as that is something I can't do.

[O1LER]

Regarding the changes I was refering to the conflicts reported by GitHub.

Done 👍

[WiserTixx]

Final changes to support the official implementation.

[Protogen187]

It says Tixx requested 1 change but I do not see any change request.

[WiserTixx]

Please do not merge this as the check.beammp.com update hasn't been deployed yet. I'll merge this PR when it is.