[FW][ADD] events: added an event tracks doc

[fw-bot]

PROJECT TASK: https://www.odoo.com/web#id=3919221&cids=3&menu_id=4720&action=333&active_id=3835&model=project.task&view_type=form

This PR breaks down everything there is to know about Event Tracks and how to create them in Odoo Events.
Completely new doc, new screenshots...etc.

This should be published/merged before the Track_Manage_Talks doc

Forward-Port-Of: #9241

[robodoo]

[fw-bot]

@ksc-odoo cherrypicking of pull request #9241 failed.

stdout:

Auto-merging content/applications/marketing/events.rst
CONFLICT (content): Merge conflict in content/applications/marketing/events.rst

stderr:

04:16:45.906807 git.c:463               trace: built-in: git cherry-pick 260a4198a5f15093ce540e2def4d4925cf30eaa4 --strategy ort
error: could not apply 260a4198a... [ADD] events: added an event tracks doc
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
----------
status:

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

⚠️ after resolving this conflict, you will need to merge it via @robodoo.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[ksc-odoo]

Hey there, @samueljlieber (and/or @Felicious ) any idea how I can resolve the conflicts on this PR? Any insight or guidance would be super helpful. Thanks! 🙏

[fw-bot]

@ksc-odoo this forward port of #9241 is awaiting action (not merged or closed).

[samueljlieber]

Resolved merge conflict in 0534383

[samueljlieber]

Update, there are a number of outstanding saas-17.2 PRs waiting for merge that also edit events.rst.

Here is the merge order:

1. [FW][ADD] events: event booths doc (17) #10265
2. [FW][ADD] events: added an event tracks doc #10273 rebase after 10265 merge
3. [FW][ADD] events: registration desk doc (17) #10439 rebase after 10273 merge
4. [FW][ADD] events: revenues report #10464 rebase after 10439 merge

[samueljlieber]

dc87c86 Rebased to resolve conflict

[samueljlieber]

@robodoo r+