Added controller for FileUpload, refactor of main package, try to add forum system.

src/main/java/site/easystartup/web/project/dto/ParticipantDto.java

@@ -0,0 +1,17 @@
+package site.easystartup.web.project.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+import java.util.Set;
+
+@Data
+public class ParticipantDto implements Serializable {
+    private final Long participantId;
+    @NotNull
+    private final String technology;
+    private final String nameOfPosition;
+    private final UserDto user;
+    private final Set<UserDto> requests;
+}

src/main/java/site/easystartup/web/project/dto/ProjectDto.java

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+package site.easystartup.web.project.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+import java.io.Serializable;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+public class ProjectDto implements Serializable {
+    private final Long projectId;
+    private final String coverLink;
+    @Size(min = 3, max = 100, message = "Title should be no less 3 and no more 100 signs")
+    @NotNull
+    private final String title;
+    @Size(min = 50, message = "Description should be no less 50 signs")
+    @NotNull
+    private final String description;
+    private final int commercialStatus;
+    @NotNull
+    private final String technology;
+    private final List<ParticipantDto> participants;
+    private final LocalDateTime createdDate;
+}

src/main/java/site/easystartup/web/project/dto/UserDto.java

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+package site.easystartup.web.project.dto;
+
+import lombok.Data;
+import site.easystartup.web.domain.Role;
+
+import java.io.Serializable;
+import java.util.Set;
+
+@Data
+public class UserDto implements Serializable {
+    private final long id;
+    private final String username;
+    private final String password;
+    private final boolean active;
+    private final String full_name;
+    private final String status;
+    private final String iconPath;
+    private final String email;
+    private final Set<String> tags;
+    private final Set<String> professions;
+    private final Set<Long> projects;
+    private final Set<Role> roles;
+}