YAMLParser now supports YAML lists not parsed by the parser itself.

This means that list of type
```yaml
list:
  - test: "Hello"
  - test: "Hi"
```
will be parsed as a list of (ConfigurationSection)[src/main/java/it/fulminazzo/yamlparser/configuration/ConfigurationSection].
Totally reworked classes separation to respect packaging conventions.
Reworked FileConfiguration#addParsers method.
Renamed `it.fulminazzo.yamlparser.configurations` package to `it.fulminazzo.yamlparser.configuration`.
Made FileConfiguration and ConfigurationSection final.
Added support for escaped dot characters: now it will be able to use `\.` in paths to allow for dotted strings to be parsed.
Added support for BigDecimal notation when getting Number types.
Updated FulmiCollection
Updated README.md

src/main/java/it/fulminazzo/yamlparser/configuration/FileConfiguration.java

@@ -41,7 +41,7 @@ public FileConfiguration(@NotNull String path) {
     public FileConfiguration(@NotNull File file) {
         super("", null);
         this.file = file.getAbsoluteFile();
-        Map<Object, Object> yaml;
+        Map<?, ?> yaml;
         try {
             yaml = newYaml().load(new FileInputStream(file));
         } catch (FileNotFoundException e) {
@@ -69,7 +69,7 @@ public FileConfiguration(InputStream inputStream) {
     public FileConfiguration(@Nullable File file, InputStream inputStream) {
         super("", null);
         this.file = file == null ? null : file.getAbsoluteFile();
-        Map<Object, Object> yaml = newYaml().load(inputStream);
+        Map<?, ?> yaml = newYaml().load(inputStream);
         this.map.putAll(IConfiguration.generalToConfigMap(this, yaml));
         addParsers();
     }