[DQL] Detecting DQL Expression files

[dorian-krefft-dt]

In cases where a DQL expression is written in a DQL file, the inspection will suggest renaming it into the .dqlexpr file.

[Copilot]

Pull request overview

This PR introduces detection of DQL expression files to help users properly categorize their DQL content. When a DQL file contains only expressions without valid command context, the inspection suggests renaming it to use the .dqlexpr extension. This enables proper parsing and validation of expression-only content.

Changes:

• Added a new PotentialExpressionFile inspection that detects when DQL files contain expressions without valid query commands
• Updated external validation and autocomplete features to skip .dqlexpr files since they don't contain full queries
• Enhanced the RenameFileQuickFix to support renaming files without starting a write action (allowing the rename processor to handle transactions)

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
src/main/resources/messages/DQLBundle.properties	Added message keys for the new inspection and updated the rename file message to be more generic
src/main/resources/inspectionDescriptions/DQLPotentialExpressionFile.html	Added HTML documentation describing the new inspection
src/main/resources/META-INF/plugin.xml	Registered the new PotentialExpressionFile inspection
src/main/java/pl/thedeem/intellij/dql/inspections/fixes/RenameFileQuickFix.java	Added startInWriteAction() override to prevent automatic write action wrapping
src/main/java/pl/thedeem/intellij/dql/inspections/external/DQLVerificationAnnotator.java	Updated to skip external validation for .dqlexpr files
src/main/java/pl/thedeem/intellij/dql/inspections/commands/PotentialExpressionFileInspection.java	New inspection implementation that detects potential expression files
src/main/java/pl/thedeem/intellij/dql/completion/DQLExternalCompletionContributor.java	Updated to skip Dynatrace autocomplete for .dqlexpr files
CHANGELOG.md	Added entry documenting the new quick fix for renaming to .dqlexpr

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