CMSIS-Project Manager Version 0.9.2 (alpha)

Release for alpha review

• added config files PLM.
• added pack selection support via pack keyword.
• added user provided linker script selection.
• added board's pack and identifier into generated cprj.
• updated schema for flexible vendor specific addon.
• fixed: device variant handling.
• fixed: component variant selection.
• fixed: remove invalid warning concerning processor usage.