moving driver specific functions

[rene-ye]

for SQLServerPreparedStatement. Looking into why we need so many repetitive functions.

[codecov-io]

Codecov Report

Merging #10 into compliance_42 will decrease coverage by 0.09%.
The diff coverage is 12.5%.

@@                Coverage Diff                 @@
##             compliance_42      #10     +/-   ##
==================================================
- Coverage            48.42%   48.32%   -0.1%     
+ Complexity            2607     2605      -2     
==================================================
  Files                  108      109      +1     
  Lines                26524    26527      +3     
  Branches              4448     4448             
==================================================
- Hits                 12843    12818     -25     
- Misses               11523    11560     +37     
+ Partials              2158     2149      -9

Flag	Coverage Δ	Complexity Δ
#JDBC42	47.74% <12.5%> (-0.17%)	2556 <2> (-3)
#JDBC43	48.27% <12.5%> (-0.08%)	2602 <2> (-4)

Impacted Files	Coverage Δ	Complexity Δ
.../microsoft/sqlserver/jdbc/SQLServerDataSource.java	45.19% <0%> (ø)	66 <1> (ø)	⬇️
...microsoft/sqlserver/jdbc/ISQLServerConnection.java	0% <0%> (ø)	0 <0> (?)
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	48.12% <50%> (-0.04%)	322 <1> (+1)
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	44.94% <0%> (-2.25%)	16% <0%> (ø)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	43.4% <0%> (-2.02%)	106% <0%> (-2%)
...n/java/com/microsoft/sqlserver/jdbc/Parameter.java	61.84% <0%> (-0.63%)	63% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.49% <0%> (-0.36%)	244% <0%> (-3%)
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	50.28% <0%> (-0.25%)	161% <0%> (ø)
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	63.24% <0%> (-0.12%)	0% <0%> (ø)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	55.15% <0%> (-0.04%)	0% <0%> (ø)
... and 4 more

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[cheenamalhotra]

We also need to add JavaDocs wherever applicable.