Matrix of levels @ LipidLynxX

Three component levels
- Residue levels:
  - B: Bulk,
  - D: Discrete,
  - S: sn Specific
- Modification levels:
  - 0 : no modification
  - 1 : mass shift
  - 2 : element shift
  - 3 : number and type of modification
  - 4 : modification position information
  - 5 : additional information (e.g. R-/S-)
- Double bond levels:
  - .0 : no information of double bond position (.0 should always be skipped, e.g. B0.0 -> B0)
  - .1 : double bond position information given
  - .2 : cis- / trans- information of all C=C bond
LipidLynxX level matrix
- The combinations of 3 sub-levels result in a matrix of LipidLynxX levels
  - e.g. B2 , D4, and S4.2