refactor(api): Deprecate password on the endpoints.

[GuiLeme]

What does this PR do?

This PR is a refactor for we not to need the password in the endpoints anymore. As discussed in the issue #14335, we came to the conclusion that the password is useless in terms of security, since it is easy to get them in getMeetings once you have the salt.

Closes Issue(s)

Closes #14335

More

It is worth reinforcing that the password is now deprecated, which means it still can be used, but we don't need it anymore, and that's why we will have old integrations preserved.

[GuiLeme]

I would like to make some comments here mainly to help the reviewer to go throught all the endpoints with all the possibilities.

First of all: The new refactoring makes it possible to send a request to the create endpoint without any passwords, but, on the grounds that old integrations with BBB don't crash, internally, the back-end generates the moderator and viewer's passwords. Those are just used so that BBB finds out what role will the user be, in case the role parameter is not send in the join endpoint.

The user is able to send an end request with or without the password, too, the only thing to keep in mind is that you might have to use the randomly generated password (which you can easily access via getMeetingInfo or getMettings endpoint request)

So, down below we have all the endpoints' routes refactored with their checksum already matching the fallowing salt:
sTOj3DtONs3Y5c0jva96zWTygdawideEQKJmCsQ

To test it thoroughly it is necessary to picture all the combinations here:
Meeting (With or without password) + Join (With or without password and role) + End (With or without Password)

(the ones marked with ***** need the randomly generated password that it is possible to get via a getMeetingInfo request)

---

CREATE (Without password)

/bigbluebutton/api/create?allowStartStopRecording=true&autoStartRecording=false&meetingID=Test&name=Test&record=false&voiceBridge=76756&welcome=%3Cbr%3EWelcome+to+%3Cb%3E%25%25CONFNAME%25%25%3C%2Fb%3E%21&checksum=96ef76b51a86805e2c790066636867e56091793e

---

JOIN (With password and without role) *****

/bigbluebutton/api/join?fullName=David&meetingID=Test&password=mp&redirect=true&checksum=534a38844363218cc4e7fd8c6e6a253c2d8d6de5

JOIN (Without password and without role)

/bigbluebutton/api/join?fullName=David&meetingID=Test&redirect=true&checksum=c0a748eaf7f147daaec696c1bf6be089f255d7d5

JOIN (With role and without password)

/bigbluebutton/api/join?fullName=David&meetingID=Test&redirect=true&role=moderator&checksum=9bea8e63abe41306a48aa523460ecd055d2565ae

JOIN (with role and with password)

/bigbluebutton/api/join?fullName=David&meetingID=Test&redirect=true&role=moderator&password=mp&checksum=6582cc8d1c52801a020868ee101028cf29439bbe

---

END (Without password)

/bigbluebutton/api/end?meetingID=Test&checksum=05c4091b22e2b5cd4918d570e84f26fe4e691acb

[sonarcloud]

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[antobinary]

@jfederico tested on a temp server. Time to merge. Great work @GuiLeme !!