Initial implementation of call chain statistics (#47547)

Initial implementation of call chain statistics (#47547)

Add support for producing "callchain profile quality map", a new
auxiliary output file describing code layout properties w.r.t.
a given call chain profile.

Sample output for System.Private.CoreLib:

CHARACTERISTIC            | PAIR COUNT | CALL COUNT | PERCENTAGE
----------------------------------------------------------------
ENTRIES TOTAL             |        291 |     266229 |     100.00
RESOLVED ENTRIES          |        267 |     260172 |      97.72
UNRESOLVED ENTRIES        |         24 |       6057 |       2.28
NEAR (INTRA-PAGE) CALLS   |        145 |     109055 |      40.96
FAR (CROSS-PAGE) CALLS    |        122 |     151117 |      56.76

Thanks

Tomas