add high-level context of explanation for server mode into server_mo… #474

Job	Run time
B: Building VtR (release, 0)	24m 1s
F: C/C++	1m 26s
B: Building VtR (debug, 0)	23m 50s
F: Python	1m 29s
B: Building VtR (debug, 1)	23m 4s
F: Python Lint	2m 1s
Run-tests	0s
U: C++ Unit Tests	24m 25s
B: GCC 9 (Ubuntu Jammy - 22.04)	28m 23s
B: GCC 10 (Ubuntu Jammy - 22.04)	25m 9s
ODIN-II Basic Test	50m 48s
Parmys Basic Test	38m 55s
B: GCC 11 (Ubuntu Jammy - 22.04)	27m 57s
B: GCC 12 (Ubuntu Jammy - 22.04)	32m 24s
S: Basic	36m 43s
B: Clang 11 (Ubuntu Jammy - 22.04)	26m 48s
R: Basic	25m 8s
B: Clang 12 (Ubuntu Jammy - 22.04)	27m 59s
R: Basic_odin	21m 9s
B: Clang 13 (Ubuntu Jammy - 22.04)	26m 39s
VQM2BLIF Basic Tests	23m 57s
R: Basic with NO_GRAPHICS	22m 27s
B: Clang 14 (Ubuntu Jammy - 22.04)	26m 58s
R: Basic with NO_SERVER	21m 15s
W: Check Compilation Warnings	25m 46s
R: Basic with CAPNPROTO disabled	23m 3s
R: Basic with VTR_ENABLE_DEBUG_LOGGING	24m 32s
R: Basic_odin with VTR_ENABLE_DEBUG_LOGGING	21m 50s
R: Strong	32m 28s
R: Strong_odin	26m 26s
R: Valgrind Memory	25m 31s
Coverity Scan	6m 53s
	12h 29m 24s

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