Linking to a specific boost

[gnunicorn]

This PR adds support for sharing and opening of specific boosts within the updates-section.

Demo:

screen-20250109-162308.mp4

Notice, how the share QR-code brings us right to the specific boost.

For the reviewer:

• This expands the rust side by providing the necessary boost-type of ref-details
• there is no UI yet for these in attachments or other places though
• To link to a specific boost, we just look for it in the list and set the index accordingly, but we aren't yet directly addressing events via individual rust-apis
• there are tests for the UI loading properly, including a new loading animation for cases where the app hasn't yet fetched the item...

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 26 lines in your changes missing coverage. Please review.

Project coverage is 29.12%. Comparing base (7743002) to head (1b8de53).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
native/acter/src/api/deep_linking.rs	0.00%	19 Missing ⚠️
native/core/src/events/common/object_reference.rs	0.00%	6 Missing ⚠️
native/acter/src/api/news.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2490      +/-   ##
==========================================
+ Coverage   28.24%   29.12%   +0.88%     
==========================================
  Files         680      680              
  Lines       45715    45487     -228     
==========================================
+ Hits        12910    13250     +340     
+ Misses      32805    32237     -568     

Flag	Coverage Δ
integration-test	39.82% <0.00%> (+0.56%)	⬆️
unittest	20.19% <0.00%> (+1.22%)	⬆️

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[kumarpalsinh25]

Overall flutter side code looks fine but have few queries which need to answer before merge.

1. Boost external sharing supported or Not? If yes then may I have reference video showing deep link of the same?
2. Does this PR also solve this issue Upon click of Notification of a boost doesn't go to the boost #2448 ?

[kumarpalsinh25]

Only via QR Code?
External sharing doesn't yet supported? I have seen external sharing options in video and haven't see any QR Specific restriction in this PR code.

[gnunicorn]

The changelog is meant to be user-facing thus I am focusing on the thing that already works nicely. The external sharing - as you point out correctly - still has some bugs so I am not advertising it here yet, despite it already being technically possible...

[kumarpalsinh25]

What happen if boost is deleted by user/You try to scan QR of different space which he/she haven't joined yet? This will remain in still loading forever?

This can happen specially in ExternalLink sharing.

[gnunicorn]

In this code - as well as any other where we have that case - this is endlessly loading, yes.

The plan is to have that case figured and caught in the url-parser and show something else in these cases: a message with the room they need to join first.

If it was deleted I am not sure what we want to do instead, but I'd just put that onto the lower burner for now, not a major use case.

[gnunicorn]

Boost external sharing supported or Not? If yes then may I have reference video showing deep link of the same?

Not that easy. As you point out, sharing is possible, yes, but not there are still enough cases where this is not working great to not advertise this.

Does this PR also solve this issue
#2448 ?

In combination with notification of comments of #2468, yes.