[MM-99] Added a note to create subscription for "pipeline" event after running a pipeline

[raghavaggarwal2308]

Summary

Added a note to create subscription for "pipeline" event after running a pipeline

Screenshot:

What to test?

• Getting a note to create a subscription for pipeline event if not present already.

Steps to reproduce:

1. Connect your GitLab account.
2. Run the pipeline of the desired project using the command below.
   /gitlab pipelines run <org/repo> <branch-name>
3. Make sure there was no subscription present for the project mentioned in the above command.

Ticket Link

Fixes #341

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (98fdf4f) 33.40% compared to head (2898af3) 33.28%.
Report is 8 commits behind head on master.

Files	Patch %	Lines
server/command.go	0.00%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #433      +/-   ##
==========================================
- Coverage   33.40%   33.28%   -0.12%     
==========================================
  Files          22       22              
  Lines        3979     3993      +14     
==========================================
  Hits         1329     1329              
- Misses       2519     2533      +14     
  Partials      131      131              

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[mickmister]

LGTM, just one suggestion

[mickmister]

0/5 we should use the pluginapi package when possible

Suggested change

	p.API.LogWarn("Failed to get subscriptions for the channel", "ChannelID", channelID, "Error", err.Error())
	p.client.Log.Warn("Failed to get subscriptions for the channel", "channel_id", channelID, "error", err.Error())

[raghavaggarwal2308]

@mickmister Updated

[raghavaggarwal2308]

0/5 we should use the pluginapi package when possible

@mickmister Are you referring to this https://pkg.go.dev/github.com/mattermost/mattermost-plugin-api package?

[mickmister]

@raghavaggarwal2308 That is the old location of that package. It's now at https://pkg.go.dev/github.com/mattermost/mattermost/server/public/pluginapi

[AayushChaudhary0001]

This PR has been tested for the following scenario:-

• Note added for running pipeline of the subscription is not already created.

This PR was working fine for the above condition, LGTM. Approved.