Add tests for git annex drop (#47)

This adds some rudimentary tests that drop files in a repository's clone
as well as from a repository on Forgejo.

Fixes #4.

Reviewed-on: https://codeberg.org/matrss/forgejo-aneksajo/pulls/47
Co-authored-by: Matthias Riße <m.risse@fz-juelich.de>
Co-committed-by: Matthias Riße <m.risse@fz-juelich.de>

.forgejo/workflows/testing.yml

@@ -219,7 +219,7 @@ jobs:
           TAGS: bindata
       - run: |
           su forgejo -c 'make test-mysql-migration test-mysql'
-        timeout-minutes: 50
+        timeout-minutes: 90
         env:
           USE_REPO_TEST_DIR: 1
   test-pgsql:
@@ -282,7 +282,7 @@ jobs:
           TAGS: bindata
       - run: |
           su forgejo -c 'make test-pgsql-migration test-pgsql'
-        timeout-minutes: 50
+        timeout-minutes: 90
         env:
           RACE_ENABLED: true
           USE_REPO_TEST_DIR: 1
@@ -334,7 +334,7 @@ jobs:
           TAGS: bindata sqlite sqlite_unlock_notify
       - run: |
           su forgejo -c 'make test-sqlite-migration test-sqlite'
-        timeout-minutes: 50
+        timeout-minutes: 90
         env:
           TAGS: sqlite sqlite_unlock_notify
           RACE_ENABLED: true