feat: Add basic project structure and configuration

- Add `.env.template` file for environment variable configuration.
- Add `.gitignore` file to ignore generated files and IDE artifacts.
- Add `Cargo.toml` file specifying project dependencies.
- Add basic project documentation in `README.md` and configuration
  guide in `docs/configuration.md`.
- Add Gitea authentication guide in `docs/gitea-auth.md`.
- Add installation guide in `docs/installation.md`.
- Add MVC architecture guide in `docs/mvc.md`.
- Add views guide in `docs/views.md`.

.gitignore

@@ -0,0 +1,28 @@
+# Generated by Cargo
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# Environment variables
+.env
+
+# IDE files
+.idea/
+.vscode/
+*.iml
+
+# macOS files
+.DS_Store
+
+# Windows files
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Log files
+*.log