Lataa GPAC 26.07

## General
- Clean up of remaining 'test mode' and 'old arch'

## MPEG-DASH & HLS
- Improved support of discontinuities in packager and client
- Add `sfrag` tolerance to generate segments with a fixed number of fragments but variable-duration fragments
- Add `dashif.ingest` profile for DASH-IF Live Ingest
- SVCTE35 and MPD inband and out-of-band events
- Improved DASH L3D and LLHLS
- Support for cleanup of timeshift buffer in manifest in multi-period cases

## Encryption
- EVP support in encryption for hardware AES
- AV1 scalable ID (temporal a/o spatial) filtering

## Filters
- Discontinuity detection in `reframer` and in `dasher`
- Improve `mediaserver` MABR repair option
- SourceID matching by prefix now possible
- Add option to switch Periods when new encryption key is encountered
- Allow DREF URL override in mp4dmx
- Raw IAMF mux to/demux from MP4
- Accept empty initial playlist in `flist
- Allow source loading to use custom source filters other than JS
- Improved GHI demuxer for manifest regeneration
- Allow `ffavf to be used as source
- Added tolerance for sfrag mode in `mp4mx` to align to sap frames

## Other
- Added MP4Box option for automatic track reordering
- Test modes for GF_Blob and gfio from mem in gpac cli
- Remote monitoring web app now supports inspecting from logs (use -rmt -rmt-log to start recording)
- Added light formatting syntax to filter status
- Switch to QJS 26-06
- Refined gfio from mem to allow multiple concurrent users, needed by some demuxers
- More configuration options for H2 and H3, improved QUIC support
- Many bug fixes and security patches