workflow底层UI库整合至项目，优化构建逻辑

easyflow-ui-admin/packages/tinyflow-ui/src/styles/base.less

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+.tf-btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 2px;
+  background: #fff;
+  border: 1px solid #ccc;
+  cursor: pointer;
+  border-radius: 5px;
+  padding: 5px;
+  margin: 0;
+  height: fit-content;
+  width: fit-content;
+
+  svg {
+    fill: currentColor;
+    width: 16px;
+    height: 16px;
+  }
+
+  &:hover {
+    border: 1px solid var(--tf-primary-color);
+  }
+}
+
+.tf-btn.tf-btn-primary {
+  background: var(--tf-primary-color);
+  color: #fff;
+
+  &:hover {
+    border: 1px solid #ccc;
+    background: #3a6fe3;
+  }
+}
+
+
+.tf-input, .tf-textarea {
+  display: flex;
+  border-radius: 5px;
+  border: 1px solid #ccc;
+  padding: 5px 8px;
+  box-sizing: border-box;
+  resize: vertical;
+  outline: none;
+  line-height: normal;
+  overflow-y: hidden;
+
+  &::placeholder {
+    color: #ccc;
+    font-size: 12px;
+  }
+
+  // 获得焦点时的样式
+  &:focus {
+    border-color: var(--tf-primary-color);
+    box-shadow: 0 0 5px rgba(81, 203, 238, .2);
+  }
+
+  // 禁用时的样式
+  &[disabled] {
+    background-color: #f0f0f0;
+    cursor: not-allowed;
+    color: #aaa;
+  }
+}
+
+
+.tf-select {
+  &-input {
+    display: flex;
+    border: 1px solid #ccc;
+    padding: 3px 10px;
+    border-radius: 5px;
+    font-size: 14px;
+    justify-content: space-between;
+    align-items: center;
+    cursor: pointer;
+    background: #fff;
+    height: 27px;
+
+    &:focus {
+      border-color: var(--tf-primary-color);
+      box-shadow: 0 0 5px rgba(81, 203, 238, .2);
+    }
+
+    &-value {
+      height: 21px;
+      min-width: 10px;
+      font-size: 12px;
+      display: flex;
+      align-items: center;
+    }
+
+    &-arrow {
+      display: block;
+      width: 16px;
+      height: 16px;
+      color: #666;
+    }
+
+    &-placeholder {
+      color: #ccc;
+    }
+  }
+
+  &-content {
+    display: flex;
+    flex-direction: column;
+    background: #fff;
+    margin-top: 5px;
+    border: 1px solid #ccc;
+    border-radius: 5px;
+    padding: 5px;
+    width: max-content;
+    min-width: 100%;
+    z-index: 999;
+    box-sizing: border-box;
+    max-height: 220px;
+    overflow: auto;
+
+    &-item {
+      display: flex;
+      align-items: center;
+      padding: 5px 10px;
+      border: none;
+      background: #fff;
+      border-radius: 5px;
+      cursor: pointer;
+      line-height: 100%;
+      gap: 2px;
+
+      span {
+        width: 16px;
+        display: flex;
+      }
+
+      svg {
+        width: 16px;
+        height: 16px;
+        margin: auto;
+      }
+
+      &:hover {
+        background: #f0f0f0;
+      }
+    }
+
+    &-children {
+      padding-left: 14px;
+    }
+  }
+}
+
+.tf-checkbox {
+  width: 14px;
+  height: 14px;
+}
+
+.tf-tabs {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 5px;
+  padding: 5px;
+  border-radius: 5px;
+  border: none;
+  background: #F4F4F5;
+
+  .tf-tabs-item {
+    flex-grow: 1;
+    padding: 5px 10px;
+    cursor: pointer;
+    border-radius: 5px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 14px;
+    color: #808088;
+  }
+
+  .tf-tabs-item.active {
+    background: #fff;
+    color: #333;
+    font-weight: 500;
+    box-shadow: 0 0 5px 0 rgba(0, 0, 0, 0.15);
+  }
+}
+
+h3.tf-heading {
+  font-weight: 700;
+  font-size: 14px;
+  margin-top: 2px;
+  margin-bottom: 3px;
+  color: #333;
+}
+
+
+.tf-collapse {
+  border: none;
+  border-radius: 5px;
+  //padding: 5px;
+
+  &-item {
+
+    &-title {
+      display: flex;
+      align-items: center;
+      cursor: pointer;
+      font-size: 14px;
+
+      &-icon {
+        display: flex;
+        width: 26px;
+        height: 26px;
+        color: #2563EB;
+        background: #cedafb;
+        border-radius: 5px;
+        padding: 3px;
+        justify-content: center;
+        align-items: center;
+        margin-right: 10px;
+
+        svg {
+          width: 22px;
+          height: 22px;
+          color: #3474ff;
+        }
+      }
+
+      &-arrow {
+        display: block;
+        width: 16px;
+        height: 16px;
+        margin-left: auto;
+      }
+    }
+
+
+    &-description {
+      font-size: 12px;
+      margin: 10px 0;
+      color: #999;
+    }
+  }
+}