Make sure that mapping table which maps DTYPE to SAMPLE_TYPE is correct

[bvnayak]

As per Sample_Types mapping table, we might have 1 dtype for multiple sample_types.

Make sure that, dtype mapping table has main sample_type which should not be an alias of other sample_type.

[bvnayak]

Taking reference of PDS Document on sample_types and data types.

[bvnayak]

As per Table 3.2 of PDS Document, main sample_types are listed below:

• MSB_INTEGER
• MSB_UNSIGNED_INTEGER
• LSB_INTEGER
• LSB_UNSIGNED_INTEGER
• IEEE_REAL
• IEEE_COMPLEX
• PC_REAL
• PC_COMPLEX
• MSB_BIT_STRING
• LSB_BIT_STRING