meson: Set project version to 0.0.0

To make it clear this project doesn't have its own release cycle.

meson.build

@@ -1,5 +1,5 @@
 project('frida-core', 'vala', 'c', 'cpp',
-  version: '1.0.0',
+  version: '0.0.0',
   meson_version: '>=1.1.0',
   default_options: ['c_std=gnu99,c99', 'cpp_std=c++17'],
 )