support geo for flink reader and writer

[Nicole00]

No description provided.

[codecov-commenter]

Codecov Report

Merging #28 (8074d6c) into master (35168f6) will decrease coverage by 0.06%.
The diff coverage is 20.00%.

@@             Coverage Diff              @@
##             master      #28      +/-   ##
============================================
- Coverage     38.19%   38.12%   -0.07%     
- Complexity      134      135       +1     
============================================
  Files            45       45              
  Lines          1309     1314       +5     
  Branches        116      117       +1     
============================================
+ Hits            500      501       +1     
- Misses          765      769       +4     
  Partials         44       44              

Impacted Files	Coverage Δ
...nk/connector/nebula/source/NebulaRowConverter.java	0.00% <0.00%> (ø)
...ache.flink/connector/nebula/utils/NebulaUtils.java	71.92% <100.00%> (+0.50%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 35168f6...8074d6c. Read the comment docs.