feat(sql): add query capabilities to the SQL Policy Store

[paullatzelsperger]

What this PR changes/adds

Adds dynamic query capabilities to the SqlPolicyDefinitionStore. In particular the following changes have been made:

• the SQL schema for PolicyDefinition was changed to use the JSON type.
• the table name was changed to edc_policydefinition to be in accordance with other persistence backends.
• many of the PolicyDefinitionStatements interface's method names were changed to keep consistent with the other SQL *stores.
• moved some generic methods (Postgres JSON array function, JSON cast operator,...) to the common-sql package
• moved the containsAnyLeftOperand method directly to QuerySpec to cut down on code duplication

Why it does that

To enable the query capabilities of the DataManagementApi for SQL Stores as well.

Further notes

this PR concludes the full-query-capability story from a functional perspective, the documentation will be provided in a separate PR.

Linked Issue(s)

Closes #1484

Checklist

• added appropriate tests?
• performed checkstyle check locally?
• added/updated copyright headers?
• documented public classes/methods?
• added/updated relevant documentation?
• added relevant details to the changelog? (skip with label no-changelog)
• formatted title correctly? (take a look at the CONTRIBUTING and styleguide for details)

[codecov-commenter]

Codecov Report

Merging #1571 (61894a5) into main (4ea80c2) will increase coverage by 0.06%.
The diff coverage is 97.56%.

@@            Coverage Diff             @@
##             main    #1571      +/-   ##
==========================================
+ Coverage   67.67%   67.73%   +0.06%     
==========================================
  Files         745      747       +2     
  Lines       16311    16339      +28     
  Branches     1064     1067       +3     
==========================================
+ Hits        11039    11068      +29     
+ Misses       4791     4790       -1     
  Partials      481      481              

Impacted Files	Coverage Δ
...lipse/dataspaceconnector/sql/SqlQueryExecutor.java	94.44% <ø> (ø)
...econnector/sql/policy/SqlPolicyStoreExtension.java	0.00% <0.00%> (ø)
.../policy/store/schema/SqlPolicyStoreStatements.java	91.66% <50.00%> (ø)
...tor/sql/policy/store/SqlPolicyDefinitionStore.java	89.01% <100.00%> (+2.05%)	⬆️
.../policy/store/schema/BaseSqlDialectStatements.java	100.00% <100.00%> (ø)
...store/schema/postgres/PolicyDefinitionMapping.java	100.00% <100.00%> (ø)
...ore/schema/postgres/PostgresDialectStatements.java	100.00% <100.00%> (ø)

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