build: Port to meson

And remove the autotools. Faster, cleaner.

https://bugs.freedesktop.org/show_bug.cgi?id=106514

examples/meson.build

@@ -0,0 +1,29 @@
+
+examples = [ 'verify_live', 'enroll', 'verify', 'img_capture' ]
+foreach example: examples
+    executable(example,
+               example + '.c',
+               dependencies: libfprint_dep,
+               include_directories: [
+                 root_inc,
+               ],
+               c_args: common_cflags)
+endforeach
+
+executable('cpp-test',
+           'cpp-test.cpp',
+           dependencies: libfprint_dep,
+           include_directories: [
+             root_inc,
+           ],
+           c_args: common_cflags)
+
+if get_option('x11-examples')
+    executable('img_capture_continuous',
+               'img_capture_continuous.c',
+               dependencies: [ libfprint_dep, xv_dep, x11_dep ],
+               include_directories: [
+                 root_inc,
+               ],
+               c_args: common_cflags)
+endif