Create a Summary of transaction parsed

[ajinkyaraj-23]

Context

When we need to do blindisigning or the number of pages are too large, we would allow users to sign the operation.(after showing blindsign warnings) But we must show summary of transaction which includes
Id: (what would be an Id?)
Number of transactions: X (> 1 for batch transaction)
Total amount being transferred: Y tez
Total fees : Z tez
Type of operation: List of operation types Show the beginning and ending operation type.
Transaction Hash:

Steps

1. Its better to track summary as the transactions are being parsed.
2. Accumulate the summary in global variable for each parsing.
3. Show summary at the end of every transaction for testing ( to be changed later based on num of screens shown).