Split the dependencies.py file into several parts.

kiwixbuild/dependencies/kiwix_tools.py

@@ -0,0 +1,19 @@
+from .base import (
+    Dependency,
+    GitClone,
+    MesonBuilder)
+
+class KiwixTools(Dependency):
+    name = "kiwix-tools"
+    dependencies = ["kiwix-lib", "libmicrohttpd", "zlib"]
+
+    class Source(GitClone):
+        git_remote = "https://github.com/kiwix/kiwix-tools.git"
+        git_dir = "kiwix-tools"
+
+    class Builder(MesonBuilder):
+        @property
+        def configure_option(self):
+            if self.buildEnv.platform_info.static:
+                return "-Dstatic-linkage=true"
+            return ""