Migrate build completely to kotlin-toolchain

.editorconfig

@@ -4,10 +4,3 @@ root = true
 [*.{kt,kts}]
 indent_style = space
 max_line_length = 120
-ktlint_standard_trailing-comma-on-call-site = disabled
-ktlint_standard_multiline-expression-wrapping = disabled
-ktlint_standard_string-template-indent = disabled
-ktlint_function_signature_rule_force_multiline_when_parameter_count_greater_or_equal_than = 5
-ktlint_function_naming_ignore_when_annotated_with=Composable
-ktlint_standard_function-expression-body = disabled
-ktlint_standard_class-signature = disabled

.github/workflows/build.yaml

@@ -32,5 +32,4 @@ jobs:
           ndk-version: r26c
 
       - name: "Build app"
-        working-directory: newbuildsystem
         run: ./kotlin build