Implement a generic filters plugin

[christophfroehlich]

The filters package provides a standardized interface for processing data as a sequence of filters. We also have custom filter plugins in the control_toolbox package.

There exists already a blueprint of such a controller from the last years ROSCon workshop:

• https://github.com./ros-controls/roscon2024_control_workshop/blob/master/README.md#task-1-controller-chaining
• https://github.com./ros-controls/roscon2024_control_workshop/blob/master/workshop_controllers/src/chained_filter_done.cpp

Necessary steps:

• Move that to this repository
• spice it up with some tests (have a look at other controllers here)
• Advertise the control_filters of control_toolbox in the description
• Create a follow-up PR in the demos repository to use such a filter for state interfaces of a controller chain.

[CodrAyush]

@christophfroehlich i want to work over this issue..could you pls help me out in setting up this project

[christophfroehlich]

what exactly do you need? maybe you should start with a good-first issue to go through the process once?

[ankurbodhe]

@christophfroehlich i'm interested to take this issue up and contribute.

[kscottz]

@christophfroehlich can you assign this to @ankurbodhe please?

[saikishor]

Done! :)

[christophfroehlich]

@christophfroehlich i'm interested to take this issue up and contribute.

Great! Come back to me if you need advise or intermediate review!

[kscottz]

@ankurbodhe how is it going? I haven't see a pull request. Did I miss it?

[ankurbodhe]

@kscottz I'm working on it and would have a PR up by 04/08.... let me know this is needed earlier than that

[kscottz]

@ankurbodhe friendly ping.

[ankurbodhe]

@christophfroehlich @kscottz here is a link to the draft PR: #1634
Would love to get some advise and review on this draft and will finish the rest post that.

Do let me know if there are any issues with the PR