tools/tests: small end-to-end test suite for importing/pruning

As bigger changes lie ahead, we want a small end-to-end test suite
that ensures that our importing and tracing does not fall apart. With
this change, we add the infrastructure and two test-cases (fib, qsort)
including ELFs, traces, and injection results.

In order to run the basic-pruner test cases, one needs to setup a
MySQL table and set the CMake option ENABLE_DATABASE_TESTS.

tools/tests/qsort/state/keyboard

@@ -0,0 +1,132 @@
+keyboard = {
+  controller = {
+    tim = false
+    auxb = false
+    c_d = false
+    sysf = false
+    inpb = false
+    outb = false
+    kbd_clock_enabled = true
+    aux_clock_enabled = false
+    allow_irq1 = true
+    allow_irq12 = false
+    kbd_output_buffer = 0xfa
+    aux_output_buffer = 0x00
+    last_comm = 0x60
+    expecting_port60h = 0
+    expecting_mouse_parameter = 0
+    last_mouse_command = 0x56
+    timer_pending = 0
+    irq1_requested = false
+    irq12_requested = false
+    scancodes_translate = true
+    expecting_scancodes_set = false
+    current_scancodes_set = 1
+    bat_in_progress = false
+  }
+  mouse = {
+    sample_rate = 100
+    resolution_cpmm = 4
+    scaling = 1
+    mode = 10
+    saved_mode = 139
+    enable = false
+    button_status = 224
+    delayed_dx = 0
+    delayed_dy = 0
+    delayed_dz = 0
+    im_request = 0
+    im_mode = false
+  }
+  kbd_internal_buffer = {
+    num_elements = 0
+    buffer = {
+      0 = 0xfa
+      1 = 0xfa
+      2 = 0x00
+      3 = 0x00
+      4 = 0x00
+      5 = 0x00
+      6 = 0x00
+      7 = 0x00
+      8 = 0x00
+      9 = 0x00
+      10 = 0x00
+      11 = 0x00
+      12 = 0x00
+      13 = 0x00
+      14 = 0x00
+      15 = 0x00
+    }
+    head = 2
+    expecting_typematic = false
+    expecting_led_write = false
+    delay = 1
+    repeat_rate = 11
+    led_status = 0
+    scanning_enabled = true
+  }
+  mouse_internal_buffer = {
+    num_elements = 0
+    buffer = {
+      0 = 0x00
+      1 = 0x00
+      2 = 0x00
+      3 = 0x00
+      4 = 0x00
+      5 = 0x00
+      6 = 0x00
+      7 = 0x00
+      8 = 0x00
+      9 = 0x00
+      10 = 0x00
+      11 = 0x00
+      12 = 0x00
+      13 = 0x00
+      14 = 0x00
+      15 = 0x00
+      16 = 0x00
+      17 = 0x00
+      18 = 0x00
+      19 = 0x00
+      20 = 0x00
+      21 = 0x00
+      22 = 0x00
+      23 = 0x00
+      24 = 0x00
+      25 = 0x00
+      26 = 0x00
+      27 = 0x00
+      28 = 0x00
+      29 = 0x00
+      30 = 0x00
+      31 = 0x00
+      32 = 0x00
+      33 = 0x00
+      34 = 0x00
+      35 = 0x00
+      36 = 0x00
+      37 = 0x00
+      38 = 0x00
+      39 = 0x00
+      40 = 0x00
+      41 = 0x00
+      42 = 0x00
+      43 = 0x00
+      44 = 0x00
+      45 = 0x00
+      46 = 0x00
+      47 = 0x00
+    }
+    head = 0
+  }
+  controller_Q = {
+    0 = 0x00
+    1 = 0x00
+    2 = 0x00
+    3 = 0x00
+    4 = 0x00
+  }
+  controller_Qsize = 0
+  controller_Qsource = 0
+}