Add Azure Storage Files connector and trigger samples

[YasanPunch]

Purpose

The ballerinax/azure.storage.files connector and its file listener have no usage samples in the connector catalog under integrator-default-profile/connectors/. This PR adds them so the Azure Files connector and trigger are represented alongside the other connector samples.

Goals

Provide two minimal, self-contained samples that show the two ways the Azure Files connector is used:

• Connector (client) sample — authenticate against a file share and perform a file operation.
• Trigger (listener) sample — react to files appearing on a share.

Approach

Two new packages, both following the existing connector-sample conventions in this repo (same file skeleton, org = "wso2", distribution = "2201.13.1", [build-options] sticky = true, kebab-case title):

integrator-default-profile/connectors/azure.storage.files_connector_sample

• config.bal — accountName, accountKey, shareName as configurable values.
• connections.bal — a final files:Client built from those values.
• automation.bal — uploads a local file to /reports/q1-report.pdf and verifies it exists via hasFile, with on fail error logging.

integrator-default-profile/connectors/azure.storage.files_trigger_sample

• config.bal — the same three configurable values.
• main.bal — a files:Listener on the share (5s polling) with a service /incoming whose onFileJson remote function logs the payload; @files:FunctionConfig deletes the file after successful processing and moves it to /failed on error.

No credentials are committed — all auth values are configurable, and Config.toml is gitignored.

User stories

As a developer evaluating WSO2 Integrator, I want a runnable reference for the Azure Files connector and trigger so I can see the client setup, auth shape, and listener/FunctionConfig semantics without reading the connector API docs end to end.

Release note

Added Azure Storage Files connector and trigger samples to the connector sample catalog.

Documentation

N/A — connector samples in this directory are not separately documented; they are surfaced through the connector catalog.

Training

N/A

Certification

N/A — adding samples has no impact on certification exams.

Marketing

N/A

Automation tests

• Unit tests

  None. Consistent with the rest of integrator-default-profile/connectors/, which ships no test packages.

• Integration tests

  None. Both packages were verified to compile with bal build; each produces its executable successfully. Running them end to end requires a live Azure Storage account and file share.

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes
• Ran FindSecurityBugs plugin and verified report? N/A — FindSecurityBugs targets Java; these are Ballerina packages with no Java source.
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes — accountName, accountKey and shareName are all configurable with no defaults, and each package's .gitignore excludes Config.toml.

Samples

The two packages added by this PR are themselves the samples. Neither is registered in .github/workflows/projects.json, so no Docker image is built or pushed for them — matching how every other connector sample in this directory is handled.

Related PRs

wso2/docs-integrator#617

Migrations (if applicable)

N/A

Test environment

• Ballerina: built locally with Swan Lake 2201.13.5; packages pin distribution = "2201.13.1".
• OS: macOS (Darwin 25.5.0).

Learning

Modelled the package layout and file split on the existing connector samples in this directory (e.g. github_connector_sample), and the listener's @files:FunctionConfig post-processing options (afterProcess, afterError.moveTo) on the ballerinax/azure.storage.files connector API.

[coderabbitai]

Important

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