Add integrations module (Discord) test hmac

[Jerboa-app]

Closes #82

[BurrowBot]

Great, coverage is exactly the same as main!
Here is the full report breakdown

Total coverage 47.14 % (0.0 % against main)
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src/integrations/mod.rs          | 0.0   % 0 / 30
src/main.rs                      | 0.0   % 0 / 15
src/server/api/stats.rs          | 0.0   % 0 / 83
src/server/http.rs               | 0.0   % 0 / 20
src/server/stats/mod.rs          | 0.0   % 0 / 28
src/server/throttle.rs           | 0.0   % 0 / 48
src/server/https.rs              | 6.25  % 4 / 64
src/server/stats/hits.rs         | 22.56 % 30 / 133
src/filesystem/folder.rs         | 61.11 % 33 / 54
src/util.rs                      | 63.64 % 42 / 66
src/server/stats/digest.rs       | 67.39 % 62 / 92
src/content/mod.rs               | 72.55 % 74 / 102
src/content/sitemap.rs           | 77.78 % 119 / 153
src/config.rs                    | 82.14 % 23 / 28
src/filesystem/file.rs           | 87.88 % 29 / 33
src/lib.rs                       | 89.47 % 17 / 19
src/integrations/discord/post.rs | 90.0  % 9 / 10
src/content/filter.rs            | 100.0 % 3 / 3
src/content/mime_type.rs         | 100.0 % 30 / 30
src/integrations/webhook.rs      | 100.0 % 3 / 3
________________________________

[BurrowBot]

Looks like you increased coverage by 3.15 %, fantastic!
Here is the full report breakdown

Total coverage 50.29 % (+3.15 % against main)
________________________________
src/main.rs                      | 0.0   % 0 / 15
src/server/api/stats.rs          | 0.0   % 0 / 81
src/server/http.rs               | 0.0   % 0 / 20
src/server/stats/mod.rs          | 0.0   % 0 / 28
src/server/throttle.rs           | 0.0   % 0 / 48
src/server/https.rs              | 6.25  % 4 / 64
src/server/stats/hits.rs         | 22.56 % 30 / 133
src/filesystem/folder.rs         | 61.11 % 33 / 54
src/server/stats/digest.rs       | 67.39 % 62 / 92
src/integrations/mod.rs          | 70.59 % 24 / 34
src/content/mod.rs               | 72.55 % 74 / 102
src/util.rs                      | 76.47 % 52 / 68
src/content/sitemap.rs           | 77.78 % 119 / 153
src/config.rs                    | 82.14 % 23 / 28
src/filesystem/file.rs           | 87.88 % 29 / 33
src/lib.rs                       | 89.47 % 17 / 19
src/integrations/discord/post.rs | 90.0  % 9 / 10
src/content/filter.rs            | 100.0 % 3 / 3
src/content/mime_type.rs         | 100.0 % 30 / 30
src/integrations/webhook.rs      | 100.0 % 3 / 3
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