new directory for examples

examples/example_csstmscdata.py

+fp = "/Users/cham/projects/csst/examples/MSC_MS_210527171000_100000279_16_raw.fits"
+fp = "/Users/cham/projects/csst/examples/bias/MSC_CLB_210525120000_100000000_06_raw.fits"
+fp = "/Users/cham/projects/csst/examples/lam/MSC_CLB_210525120000_100000000_06_raw.fits"
+
+import os
+os.chdir("/Users/cham/projects/csst/test/")
+fp = "MSC_MS_210527171000_100000279_16_raw.fits"
+
+from csst.msc import CsstMscImgData
+data = CsstMscImgData.read(fp)
+
+print("data: ", data)
+print("instrument: ", data.get_l0keyword("pri", "INSTRUME"))
+print("object: ", data.get_l0keyword("pri", "OBJECT"))