feat: implement TSA

[vitormattos]

Was used a hardcoded TSA server and without authentication for now.

Validation page:

Administration settings:

[AntDavidLima]

The little I had the capacity to understand seemed right to me 😆

[vitormattos]

/backport to stable32

[vitormattos]

/backport to stable31

[backportbot-libresign]

The backport to stable31 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable31
git pull origin stable31

# Create the new backport branch
git checkout -b backport/5423/stable31

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 0ca3c8ed 42cf7187 d09296a4 7dd1078d 313ba335 cf32f6ef f15b0122 00f813e0 e4502be8 9fd8e242 ca8f86ff 6429048b 34310468 e491f10e 3922a437 73eaed16 d434175b 34a4e7de ee2bff6f 8c30b900 926dcfa1 8b82cc29 b7fca90f cac434dc f438326c ff286bdf a4341d2f 69eccaaf 17335ee5 b13e9f73

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/5423/stable31

Error: Failed to push branch backport/5423/stable31: fatal: could not read Username for 'https://github.com': No such device or address

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.