Updating summary stats schema and ingtesion

[DSuveges]

Details under this ticket: 3039

• Removing upper and lower confidence interval of beta
• Adding support for variant wise sample size.
• Sample size parsed from GWAS Catalog summary stats.
• Sample size added to study locus (collected field after the window based clumping)
• Sample summary stats dataset updated (columns removed)
• Sumstats mock logic updated.
• New filter applied: dropping associations with beta = 0
• Ingestion updated for GWAS, Finngen.

There are a handful of logic defined under the the above mentioned ticket, that I haven't addressed yet. I feel they have marginal importance in terms of scale:

 For the rest of snps if se==0 and p-value!=1 and p-value!=0 -> infer se from p-value and beta, otherwise drop
 For the rest of snps if p-value==1 or p-value==0 - infer it form beta and se
 If p-value is too small (0) even after inferring -> replace zero with 2e-308

[codecov-commenter]

Codecov Report

Merging #266 (0acb106) into main (4997432) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #266   +/-   ##
=======================================
  Coverage   86.64%   86.65%           
=======================================
  Files          81       81           
  Lines        1857     1858    +1     
=======================================
+ Hits         1609     1610    +1     
  Misses        248      248           

Files	Coverage Δ
src/otg/datasource/finngen/summary_stats.py	100.00% <100.00%> (ø)
.../otg/datasource/gwas_catalog/summary_statistics.py	100.00% <100.00%> (ø)

[d0choa]

hopefully we won't change this in a long time :)