Make CI faster (#2662)

Right now the CI takes ~30 minutes; the goal is to have it ending in
< 15 min.
The basic trick is to run the longer jobs (no_x86_64 and masan) only
with the recently updated pcaps. The same jobs will run again on schedule
(every night) testing all the traces.

This way the CI will be "green" (hopefully!) earlier while pushing new
commit/PR; full tests are simply delayed.

Details: when `NDPI_TEST_ONLY_RECENTLY_UPDATED_PCAPS` is set,
`tests/do.sh` checks only the latest 10 pcaps (i.e. the more recent pcap
added/updated) for *every* configuration.

Notes that no_x86_64 and masan jobs run twice: when pushing/merging and
on schedule (every night)

.github/workflows/build_masan.yml

@@ -0,0 +1,47 @@
+name: Memory Sanitizer
+on:
+  push:
+    branches:
+      - dev
+  pull_request:
+    branches:
+      - dev
+    types: [opened, synchronize, reopened]
+  release:
+    types: [created]
+  workflow_dispatch:
+  schedule:
+    #At the end of every day
+    - cron: '0 0 * * *'
+
+jobs:
+  memorysanitizer:
+    name: masan (ubuntu-22.04)
+    runs-on: ubuntu-22.04 # TODO: some issues with masan/clang/ubuntu-24.04
+    env:
+      CC: clang
+      CFLAGS: -Wextra -Werror -DNDPI_EXTENDED_SANITY_CHECKS
+      # Idea to have significant faster tests while pushing/merging: test all pcaps only on schedule runs; otherwise tests only the pcaps updated/added recently
+      NDPI_TEST_ONLY_RECENTLY_UPDATED_PCAPS: ${{ (github.event_name == 'schedule') && '0' || '1' }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install Ubuntu Prerequisites
+        run: |
+          sudo apt-get update
+          sudo apt-get install autoconf automake libtool pkg-config gettext flex bison libjson-c-dev libpcap-dev rrdtool librrd-dev parallel libpcre3-dev libmaxminddb-dev
+      - name: Configure nDPI
+        run: |
+          ./autogen.sh --enable-option-checking=fatal --with-pcre2 --with-maxminddb --with-memory-sanitizer --disable-memory-track-origins
+      - name: Build nDPI
+        run: |
+          make -j $(nproc) all
+          make -j $(nproc) -C example ndpiSimpleIntegration
+          make -j $(nproc) -C rrdtool
+      - name: Tests
+        run: |
+          NDPI_FORCE_PARALLEL_UTESTS=1 NDPI_SKIP_PARALLEL_BAR=1 ./tests/do.sh
+          # Some issues with masan + json-c. Disable the test as workaround
+          # ./tests/do-unit.sh
+          ./tests/do-dga.sh