Add proper logging, make commands modularized, add new commands and add event handler

.github/workflows/ci.yml

@@ -0,0 +1,45 @@
+name: Run cargo test
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  DATABASE_URL: postgres://postgres:postgres@postgres:5432/tg_dev_srv_bot
+  DISCORD_TOKEN: testing
+
+jobs:
+  test:
+    name: Run tests
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:16-alpine
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: tg_dev_srv_bot
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgmp-dev libmpfr-dev libmpc-dev
+
+      - name: Set up Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+
+      - name: Run tests
+        run: cargo test --verbose