Configure diagnostics (and MapLibre) using Pkl.

[pixlwave]

Rather than using the secrets.xcconfig to inject values into the Info.plist, which was a very roundabout way to inject secrets, this PR uses our new favourite language Pkl to generate (with the help of SwiftGen) a Secrets enum directly in the app so that safe access is guaranteed at build time.
caveat: Safe for strings anyway, it could still crash at runtime when given a malformed URL.

Additionally this PR bumps the release version ready for tomorrow's RC.

[github-actions]

• ⚠️ Use 'next', 'this' or 'previous' instead to disable the 'all' rule once, or re-enable it as soon as possible (blanket_disable_command`)

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
932	1	931	0

View the full list of 1 ❄️ flaky tests

PreviewTests test_roomMemberDetailsScreen()

Flake rate in main: 16.67% (Passed 10 times, Failed 2 times)

Stack Traces | 2.53s run time

failed - Snapshot "Ignored User" does not match reference.

@−
"file:.../__Snapshots__/PreviewTests/test_roomMemberDetailsScreen-iPhone-16-pseudo.Ignored-User.png"
@+
"file:.../tmp/PreviewTests/test_roomMemberDetailsScreen-iPhone-16-pseudo.Ignored-User.png"

To configure output for a custom diff tool, use 'withSnapshotTesting'. For example:

    withSnapshotTesting(diffTool: .ksdiff) {
      // ...
    }

The percentage of pixels that match 0.9442749 is less than required 1.0
The lowest perceptual color precision 0.39937502 is less than required 0.98 (PreviewTests/Sources/PreviewTests.swift:85)

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
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