feat: Add format-specific annotations to override secret file names

[Techassi]

Caution

Blocked on 25.3.0 release.
A check to prevent path traversal was introduced in a7718e0, integration tests still need to be added.

This PR adds support to customize the secret file names using secrets.stackable.tech annotations on the volume. The following attributes were added:

• secrets.stackable.tech/format.tls-pkcs12.keystore-name
• secrets.stackable.tech/format.tls-pkcs12.truststore-name
• secrets.stackable.tech/format.tls-pem.cert-name
• secrets.stackable.tech/format.tls-pem.key-name
• secrets.stackable.tech/format.tls-pem.ca-name

This came up in demo testing during the 25.3.0 SPD release, see stackabletech/demos#157 (comment).

This PR adds a new test dimension which is used in the tls tests. All adjusted tests pass:

--- PASS: kuttl (86.98s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/tls_openshift-false_rsa-key-length-3072_custom-secret-names-False (58.78s)
        --- PASS: kuttl/harness/tls_openshift-false_rsa-key-length-2048_custom-secret-names-True (7.52s)
        --- PASS: kuttl/harness/tls_openshift-false_rsa-key-length-2048_custom-secret-names-False (7.32s)
        --- PASS: kuttl/harness/cert-manager-tls_openshift-false (81.10s)
        --- PASS: kuttl/harness/tls_openshift-false_rsa-key-length-3072_custom-secret-names-True (13.35s)
PASS