Add Relative Path on windows

• New alias file location
• Add current or direct path on windows
• Command validation

What's Changed

• fix: checks if command is available before executing. throws when com… by @visschersm in #38
• 46 alias file path by @visschersm in #47
• Feature/44 add new alias by @visschersm in #48

Full Changelog: v0.14.0...v0.15.0