CLI implementation & linting (#2)

Implement a basic CLI interface & add linting to the project.

Reviewed-on: #2

.editorconfig

@@ -0,0 +1,16 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = false
+max_line_length = 120
+tab_width = 4
+
+[{*.yaml,*.yml}]
+indent_size = 2
+
+[{*.kt,*.kts}]
+ij_kotlin_packages_to_use_import_on_demand = org.junit.jupiter.api,aws.sdk.kotlin.services.s3,kotlinx.coroutines,java.io,ziputils