Add new indexing strategy to support case insensitivity

[Sachin-Mamoru]

Proposed changes in this pull request

• Implement Indexing and Optimization Enhancements for Improved Database Performance product-is#21662

When should this PR be merged

• Check migration impact if we drop primary keys. Else we can auto-generate a primary key.
• And if a foreign key references the primary key what should be the process to drop it?
• Check the impact of the unique constrain and unique index possibility of having null values
• Add specific migration docs for these changes
• Newly added index checks the usage of queries and analyses the order and all

CREATE INDEX IDX_AT_CK_AU_LO ON IDN_OAUTH2_ACCESS_TOKEN(CONSUMER_KEY_ID, LOWER(AUTHZ_USER), TOKEN_STATE, USER_TYPE);
CREATE INDEX IDX_AT_AU_TID_UD_TS_CKID_LO ON IDN_OAUTH2_ACCESS_TOKEN(LOWER(AUTHZ_USER), TENANT_ID, USER_DOMAIN, TOKEN_STATE, CONSUMER_KEY_ID);
CREATE INDEX IDX_AT_AU_CKID_TS_UT_LO ON IDN_OAUTH2_ACCESS_TOKEN(LOWER(AUTHZ_USER), CONSUMER_KEY_ID, TOKEN_STATE, USER_TYPE);

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.80%. Comparing base (366a820) to head (ff14948).
Report is 11 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6166      +/-   ##
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+ Coverage     44.64%   44.80%   +0.16%     
- Complexity    13474    13591     +117     
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  Files          1580     1604      +24     
  Lines         98826    99157     +331     
  Branches      16043    16070      +27     
============================================
+ Hits          44124    44431     +307     
- Misses        48092    48097       +5     
- Partials       6610     6629      +19     

Flag	Coverage Δ
unit	26.94% <ø> (+0.30%)	⬆️

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