Add mines amount to state

• Add mines amount to state
• Update documentation
• Upadte version of dependency packages

First minifield complete version

• Add gameplay interface
• Add readme file
• Add bot gameplay
• Add globals event listener
• Add open checker in batch mode
• Fix many code bugs
• Add 100% code test coverage

First minifield stable version

• Add base project structure
• Add minefield core implementation
• Add interface example
• Add tests with 100% coverage
• Add webpack builder