Support more solution methods

[thehale]

export const METHOD_UNKNOWN: STIF.Method = 'unknown'

// 2x2x2 Methods
export const METHOD_ORTEGA: STIF.Method = 'ortega'
export const METHOD_CLL: STIF.Method = 'cll'
export const METHOD_EG: STIF.Method = 'eg'

// 3x3x3 Methods
export const METHOD_LBL: STIF.Method = 'lbl'
export const METHOD_CORNERS_FIRST: STIF.Method = 'corners-first'
export const METHOD_CFOP: STIF.Method = 'cfop'
export const METHOD_ROUX: STIF.Method = 'roux'
export const METHOD_ZZ: STIF.Method = 'zz'
export const METHOD_PETRUS: STIF.Method = 'petrus'
export const METHOD_HEISE: STIF.Method = 'heise'

// Big Cube Methods
export const METHOD_REDUCTION: STIF.Method = 'reduction'
export const METHOD_YAU: STIF.Method = 'yau'
export const METHOD_HOYA: STIF.Method = 'hoya'

[thehale]

Need ZZ and Roux for 1.0.0