App architecture modifications.

Now GUI and the app itself is divided into two different binaries.
The app also provides system tray icon.
Whereas the GUI can be used to configure the app.

app/post_build.py

@@ -0,0 +1,63 @@
+# Simple python script used to
+# copy some libraries to the "target" directory
+# after Rust build
+
+# Note that Rust build should be run via "cargo make <cmd>" command
+# in order to automate all the compile process
+
+import os
+from pathlib import Path
+import shutil
+
+# some config vars
+SOURCE = (
+    "commands/",
+    "vosk/",
+    "lib/",
+    "keywords/",
+    "libgcc_s_seh-1.dll",
+    "libstdc++-6.dll",
+    "libvosk.dll",
+    "libvosk.lib",
+    "libwinpthread-1.dll"
+)
+
+TARGET_DIRS = (
+    "target/debug",
+    "target/release"
+)
+
+ABS_PATH = os.getcwd() + "/"
+
+for tdir in TARGET_DIRS:
+    tdir = ABS_PATH + tdir
+
+    if not Path(tdir).is_dir():
+        print("Skipping target, not a directory: ", tdir)
+        continue
+
+    # copy lib files
+    for src in SOURCE:
+        if os.path.isdir(ABS_PATH + src):
+            # copy the whole directory
+            full_target_dir_path = os.path.join(tdir, src)
+
+            if os.path.isdir(full_target_dir_path):
+                print("[-] Directory already exists, skipping: ", src)
+            else:
+                shutil.copytree(ABS_PATH + src, os.path.join(tdir, src))
+
+                print("[+] Directory copied: ", src)
+        elif os.path.isfile(ABS_PATH + src):
+            # copy file
+            full_target_file_path = os.path.join(tdir, src)
+            if os.path.isfile(full_target_file_path):
+                print("[-] File already exists, skipping: ", src)
+            else:
+                shutil.copy(ABS_PATH + src, tdir)
+                print("[+] File copied: ", src)
+        else:
+            print("[?] Unknown entity to copy: ", src)
+
+
+    print("Post compile build done.")