feat: add sqlstring and supports-color modules

- Introduced sqlstring module for SQL escape and formatting.
- Added supports-color module to detect terminal color support.
- Created dashboard and login views with Bootstrap styling.
- Implemented user schema in SQL with mock data for testing.

backend/node_modules/lru.min/lib/index.d.ts

@@ -0,0 +1,38 @@
+export type CacheOptions<Key = unknown, Value = unknown> = {
+    /** Maximum number of items the cache can hold. */
+    max: number;
+    /** Function called when an item is evicted from the cache. */
+    onEviction?: (key: Key, value: Value) => unknown;
+};
+export declare const createLRU: <Key, Value>(options: CacheOptions<Key, Value>) => {
+    /** Adds a key-value pair to the cache. Updates the value if the key already exists. */
+    set(key: Key, value: Value): undefined;
+    /** Retrieves the value for a given key and moves the key to the most recent position. */
+    get(key: Key): Value | undefined;
+    /** Retrieves the value for a given key without changing its position. */
+    peek: (key: Key) => Value | undefined;
+    /** Checks if a key exists in the cache. */
+    has: (key: Key) => boolean;
+    /** Iterates over all keys in the cache, from most recent to least recent. */
+    keys(): IterableIterator<Key>;
+    /** Iterates over all values in the cache, from most recent to least recent. */
+    values(): IterableIterator<Value>;
+    /** Iterates over `[key, value]` pairs in the cache, from most recent to least recent. */
+    entries(): IterableIterator<[Key, Value]>;
+    /** Iterates over each value-key pair in the cache, from most recent to least recent. */
+    forEach: (callback: (value: Value, key: Key) => unknown) => undefined;
+    /** Deletes a key-value pair from the cache. */
+    delete(key: Key): boolean;
+    /** Evicts the oldest item or the specified number of the oldest items from the cache. */
+    evict: (number: number) => undefined;
+    /** Clears all key-value pairs from the cache. */
+    clear(): undefined;
+    /** Resizes the cache to a new maximum size, evicting items if necessary. */
+    resize: (newMax: number) => undefined;
+    /** Returns the maximum number of items that can be stored in the cache. */
+    readonly max: number;
+    /** Returns the number of items currently stored in the cache. */
+    readonly size: number;
+    /** Returns the number of currently available slots in the cache before reaching the maximum size. */
+    readonly available: number;
+};