PR: Add Support for TOML "Dotfile" Configuration

[Fahad-Ali-Khan-ca]

Description: This PR adds support for users to specify configuration options via a TOML configuration file located in their home directory (e.g., ~/.github-echo-config.toml). This feature allows users to persist their preferred options in a config file rather than providing them through command-line arguments every time.

Key Features:

• [x] The tool searches for a .toml config file in the user's home directory.
• [x] If the config file is missing, the tool will proceed as normal without any impact.
• [x] If the config file exists but cannot be parsed, the tool will exit and display an appropriate error message.
• [x] Values in the config file are used as defaults unless overridden by command-line arguments.
• [x] Unrecognized keys in the config file are ignored to allow flexibility in user configurations.
• [x] Further testing to ensure compatibility with all existing command-line arguments.

[AryanK1511]

Hey @Fahad-Ali-Khan-ca! Thanks for sending in this PR. Are you sure you committed all changes since I only see a modified README.md file?

[Fahad-Ali-Khan-ca]

Hey @Fahad-Ali-Khan-ca! Thanks for sending in this PR. Are you sure you committed all changes since I only see a modified README.md file?

Hi, yeah this is just a draft I'm currently working on the issue #46

[AryanK1511]

oh okay! Thanks for letting me know

[AryanK1511]

@Fahad-Ali-Khan-ca Thanks for working on this 🫡