DOC: replace the README by a markdown version #46

Job	Run time
Generate Build Matrix	4s
ubuntu-latest, gcc, no features	1m 17s
ubuntu-latest, gcc, all features	1m 46s
ubuntu-latest, gcc, ASAN, all features	2m 22s
ubuntu-latest, gcc, gz=zlib=1	1m 25s
ubuntu-latest, gcc, ssl=stock	1m 36s
ubuntu-latest, gcc, ssl=openssl=1.0.2u	1m 29s
ubuntu-latest, gcc, ssl=openssl=1.1.1s	1m 35s
ubuntu-latest, gcc, ssl=quictls=yes	3m 21s
ubuntu-latest, gcc, ssl=wolfssl=5.7.0	1m 36s
ubuntu-latest, gcc, ssl=aws_lc=1.16.0	1m 33s
ubuntu-latest, gcc, ssl=openssl=3.3.0	1m 40s
ubuntu-latest, gcc, ssl=libressl=3.9.2	1m 34s
ubuntu-latest, clang, no features	1m 31s
ubuntu-latest, clang, all features	1m 47s
ubuntu-latest, clang, ASAN, all features	2m 17s
ubuntu-latest, clang, gz=zlib=1	1m 14s
ubuntu-latest, clang, ssl=stock	1m 42s
ubuntu-latest, clang, ssl=openssl=1.0.2u	1m 32s
ubuntu-latest, clang, ssl=openssl=1.1.1s	1m 43s
ubuntu-latest, clang, ssl=quictls=yes	3m 17s
ubuntu-latest, clang, ssl=wolfssl=5.7.0	1m 49s
ubuntu-latest, clang, ssl=aws_lc=1.16.0	1m 54s
ubuntu-latest, clang, ssl=openssl=3.3.0	1m 45s
ubuntu-latest, clang, ssl=libressl=3.9.2	1m 47s
macos-14, clang, no features	1m 19s
	44m 55s

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