enh(postgres): Add lock filtering capability

[Evan-Adam]

postgresql use lock internally to process SQL query. this monitoring mode was not filtering lock by type.
This PR add a new argument allowing to filter the lock monitored by locktype

Fixes # CTOR-2319

Type of change

• Patch fixing an issue (non-breaking change)
• New functionality (non-breaking change)
• Functionality enhancement or optimization (non-breaking change)
• Breaking change (patch or feature) that might cause side effects breaking part of the Software

How this pull request can be tested ?

Create a pg container and execute the plugin on it. both the default database and the postgres internal database should show metrics

• I have followed the coding style guidelines provided by Centreon
• I have commented my code, especially hard-to-understand areas of the PR.
• I have rebased my development branch on the base branch (develop).
• In case of a new plugin, I have created the new packaging directory accordingly.
• I have implemented automated tests related to my commits.
  • Data used for automated tests are anonymized.
• I have reviewed all the help messages in all the .pm files I have modified.
  • All sentences begin with a capital letter.
  • All sentences end with a period.
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• After having created the PR, I will make sure that all the tests provided in this PR have run and passed.