adds server/browser cache periods, refreshes in router

[Jerboa-app]

Closes #56
Closes #7

[github-actions]

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

Total coverage 36.3 % (0.0 % against main)
________________________________
src/config.rs                    | 0.0   % 0 / 14
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/web/mod.rs                   | 0.0   % 0 / 30
src/web/throttle.rs              | 0.0   % 0 / 48
src/web/stats.rs                 | 4.45  % 11 / 247
src/server/https.rs              | 6.25  % 4 / 64
src/lib.rs                       | 42.11 % 8 / 19
src/util.rs                      | 60.66 % 37 / 61
src/filesystem/folder.rs         | 61.11 % 33 / 54
src/content/mod.rs               | 72.0  % 72 / 100
src/content/sitemap.rs           | 79.45 % 116 / 146
src/filesystem/file.rs           | 87.88 % 29 / 33
src/web/discord/request/post.rs  | 90.0  % 9 / 10
src/content/filter.rs            | 100.0 % 3 / 3
src/content/mime_type.rs         | 100.0 % 30 / 30
src/web/discord/request/model.rs | 100.0 % 3 / 3
________________________________

[github-actions]

Seems the coverage is below main by -0.08 %, please consider adding to the tests, thanks!
Here is the full report breakdown

Total coverage 36.22 % (-0.08 % against main)
________________________________
src/config.rs                    | 0.0   % 0 / 14
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/web/mod.rs                   | 0.0   % 0 / 30
src/web/throttle.rs              | 0.0   % 0 / 48
src/web/stats.rs                 | 4.45  % 11 / 247
src/server/https.rs              | 6.25  % 4 / 64
src/lib.rs                       | 42.11 % 8 / 19
src/util.rs                      | 60.66 % 37 / 61
src/filesystem/folder.rs         | 61.11 % 33 / 54
src/content/mod.rs               | 72.0  % 72 / 100
src/content/sitemap.rs           | 78.38 % 116 / 148
src/filesystem/file.rs           | 87.88 % 29 / 33
src/web/discord/request/post.rs  | 90.0  % 9 / 10
src/content/filter.rs            | 100.0 % 3 / 3
src/content/mime_type.rs         | 100.0 % 30 / 30
src/web/discord/request/model.rs | 100.0 % 3 / 3
________________________________

[github-actions]

Seems the coverage is below main by -0.11 %, please consider adding to the tests, thanks!
Here is the full report breakdown

Total coverage 36.19 % (-0.11 % against main)
________________________________
src/config.rs                    | 0.0   % 0 / 14
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/web/mod.rs                   | 0.0   % 0 / 30
src/web/throttle.rs              | 0.0   % 0 / 48
src/web/stats.rs                 | 4.45  % 11 / 247
src/server/https.rs              | 6.25  % 4 / 64
src/lib.rs                       | 42.11 % 8 / 19
src/util.rs                      | 60.66 % 37 / 61
src/filesystem/folder.rs         | 61.11 % 33 / 54
src/content/mod.rs               | 72.0  % 72 / 100
src/content/sitemap.rs           | 77.85 % 116 / 149
src/filesystem/file.rs           | 87.88 % 29 / 33
src/web/discord/request/post.rs  | 90.0  % 9 / 10
src/content/filter.rs            | 100.0 % 3 / 3
src/content/mime_type.rs         | 100.0 % 30 / 30
src/web/discord/request/model.rs | 100.0 % 3 / 3
________________________________