Allow filtering from columns

[elfjes]

moved from Uninett/argus-htmx-frontend#144

Allow specifiying when a column may be "filterable" (by specifying the IncidentTableColumn.filter_field). This means:

• a button will be attached to the column header
• clicking that button will display an input element
• typing into this element (ie change event) will fire an htmx request with the specified filter_field as the query param to filter incidents

TODO:

• create the ui elements and activate this element when IncidentTableColumn.filter_field is set
• wrap the column headers in a form and send this form as htmx request on change event
  • include filter-box form fields in the request
• prefill input value based on current values

Limitations:

• only support simple text input for now

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.97%. Comparing base (1eb2c3a) to head (19bc747).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
src/argus/htmx/incidents/utils.py	30.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1020      +/-   ##
==========================================
+ Coverage   77.50%   81.97%   +4.47%     
==========================================
  Files         132      132              
  Lines        4868     4866       -2     
==========================================
+ Hits         3773     3989     +216     
+ Misses       1095      877     -218     

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[hmpf]

Could you write a test that shows the use of filter_field? The doc-string is a bit vague. You just need to show how the customization-blob for the column looks like. Or you could figure out some other way to show how to use it.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[hmpf]

For other reviewers: request.htmx is explicitly set because we skip the middleware when we build a request directly like this.